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>> [MUSCIC PLAYING]

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>> DAVID MALAN: Hello
world, this is CS50LIVE.

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So you may recall from week zero
that desk lamps have somehow

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become a thing this year in CS50.

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And this is actually just
the result of my fairly

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spontaneously, before that first
class, having gotten into the car,

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driven to a local store called Target to
pick up really any lamps I could find.

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Because what I wanted to do
was have some light bulbs

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with which to represent zeros and ones.

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Whereby if the light bulb was on,
it would represent a one in lecture.

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And if the light bulb was off
it would represent a zero.

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Now the funny thing is, at
the end of that lecture,

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I didn't really need
the desk lamps anymore.

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So I asked students to volunteer if
they might like to take them home.

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You've never seen so much
interesting in anything

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in CS50, let alone in desk lamps, so
they very quickly were given away.

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So we completely ran out of
stock, despite some requests

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ever since then for more.

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So I decided to get back
into the car the other day

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and drive again to that store,
Target, to pick up some more.

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>> We're here on our way to Target to
pick up this week batch of desk lamps.

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I like to work on the end
so no one scratches my car.

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>> [MUSIC PLAYING]

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>> This was CS50.

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I'm happy to say that desk
lamps are now back in stock.

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But I did want to share a particular
tweet with you that caught our eye back

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when we first gave out some of
those desk lamps in week zero.

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This is posted by one of your
classmates, Andrew Hill, who wrote,

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"davidjmalan, where's my lamp?" "

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Now the funny thing is
this tweet caught the eye

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of a colleague of mine,
Shelley Westover, who

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you may recall from such films as this.

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In any case, Shelley replied to
Andrew's tweet as follows, "Andrew!

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Are you taking CS50 this Fall?

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Interested in doing some
part-time editing for the course?"

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Shelley, of course, is CS50's
full time team behind the camera.

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She had actually been a
teaching assistant for a course

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that Andrew at the time had previously
taken at Harvard Extension School.

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Now the funny thing is, we decided
to humor Andrew with this request

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and we dropped one of those
desk lamps in the mail.

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And to be honest, you
know what would be better?

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Andrew, would you mind?

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Could you join me here on the internet?

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Andrew, would you like
to say, hello world?

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ANDREW HILL: Yes, David.

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Hello, world.

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>> DAVID J. MALAN: So everyone,
here is Andrew Hill.

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These are some of the desk lamps we
picked up at Target the other day.

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And it is no understatement to say
that these desk lamps change lives.

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And so in fact, now that we
do have more of the things,

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we thought we'd invite you, the
audience, particularly those in CS50X

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to participate in a
little challenge of sorts.

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If you might like to receive
the next CS50 desk lamp,

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go ahead and visit wheresmylamp.com.

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Which, believe or not, we
actually bought last night

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at Andrew's suggestion.

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And we placed there a form that's
going to ask you for your name,

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your email, and the URL
of the video in which you

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try to convince us that you
should be the next Andrew Hill,

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at least for the desk lamp part.

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So thank you so much Andrew.

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>> ANDREW HILL: Thank you, David.

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>> DAVID J. MALAN: We are so
pleased to have you here with us.

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ANDREW HILL: Proud to be.

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DAVID J. MALAN: Now
in the news today you

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may have noticed that Facebook, our
old friend, has turned 10 years old.

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In fact this screen shot
here was posted, no surprise,

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to Facebook itself by one of
Facebook's founders Eduardo Severin.

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Who, if you saw the
movie The Social Network,

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was played by actor Andrew Garfield.

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Now we thought this would
be an opportune moment

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to point out that Facebook has
one of these things called an API.

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An application programming interface.

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And what an API allows you to do
is query service, like Facebook,

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get back some data-- often in a format
known as JSON or JavaScript Object

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Notation-- and then integrate that
data into your own application.

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Now it turns out, as a side
effect of Facebook having an API,

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you can actually poke around
individual users JSON data

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and see what their unique identifier is.

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>> Those unique identifiers are assigned
to users when they first sign up

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and it turns out-- and this is
very common when you use databases

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for websites-- those integers are
assigned in increasing order from one

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on up.

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So in fact, even in a browser right now,
if you go to graph.facebook.com/zuck,

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where zuck is Mark
Zuckerberg's username.

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You'll see this JSON
data come back indicating

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that this is indeed Mark Zuckerberg.

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And his unique ID is
apparently 4, not 1.

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So the funny thing is it turns out
that Mark's unique ID is indeed four

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because he actually created a few
test accounts before setting up

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his own Facebook account.

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Now I'll admit the curiosity
got the best of me--

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and you're welcome to go here too--
if you go to graph.facebook.com/dmalan

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you'll see that I, on the other
hand, was a bit of a late comer.

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At least relatively speaking, early
on, and I was user number 6,454.

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Try it with your own user name
at the end of the URL like that.

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>> Now also in the news this week
has been this little nugget.

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It turns out that password is no
longer the most popular password.

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In fact it's been
overtaken by this gem here,

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123456, which is, funny
enough, even more secure

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than one of our favorite
passwords as in this film here.

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[VIDEO PLAYBACK]

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KING ROLAND: The combination is one.

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DARK HELMET: One.

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COLONEL SANDURZ: One!

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KING ROLAND: Two.

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DARK HELMET: Two.

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COLONEL SANDURZ: Two.

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KING ROLAND: Three.

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DARK HELMET: Three.

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COLONEL SANDURZ: Three.

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KING ROLAND: Four.

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DARK HELMET: Four.

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COLONEL SANDURZ: Four.

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KING ROLAND: Five.

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DARK HELMET: Five.

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COLONEL SANDURZ: Five.

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DARK HELMET: So the combination
is one, two, three, four, five?

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That's the stupidest combination
I ever heard in my life.

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That's the kind of thing an
idiot would have on his luggage!

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>> COLONEL SANDURZ: Thank
you, your Highness.

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>> [END VIDEO PLAYBACK]

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DAVID J. MALAN: Now in third place
is the ever so slightly more secure

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12345678, which is apparently the result
of people taking a little literally

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the typical requirement the passwords
need to be at least 8 characters long.

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And yet, even that password is more
secure than what apparently the US

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government used for 20 years to
protect our nuclear missiles.

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Now in fourth place is
qwerty, which is the result

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of typing the characters along
the top of a typical US keyboard.

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In fifth place is abc123.

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And adorably, in ninth
place, is iloveyou.

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Aw.

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>> Now you may have noticed that the
start of CS50's lecture videos

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there's often some aerial
photography such as that picture

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here for Memorial Hall which is the
building in which Sanders theater where

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CS50's lectures are actually held.

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We take these photos and these videos
using literally a flying drone.

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Such as that picture here.

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And we attach to the
bottom of this thing

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a tiny little camera that actually
is even smaller than you might think.

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And using a remote control, and
believe it or not a pair of goggles,

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we're able to fly up, down, left,
right, forward, back with the camera

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attached and actually film
in fairly high resolution

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and then prepend those video
clips to the start of lectures.

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>> Now it's been a beautiful,
albeit super cold,

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week here in Cambridge, Massachusetts.

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It's been snowing and one
of the more common requests

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that we've gotten over
Facebook is to take

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some additional tours of Harvard campus.

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So we asked CS50's own Milo if he
wouldn't mind taking us for a tour.

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>> Now we've been keeping an eye, as
usual, on Facebook, Reddit and Twitter.

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And one of the posts in particular
on Facebook caught our eye recently.

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That from your classmate,
Brenda Anderson,

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who's actually been amazing on various
discussion forums fielding questions

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from her fellow classmates.

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Brenda hails from New Zealand.

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And what was nice was that
she took it upon herself

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to put together an amalgam of the
problem set one and problem set four.

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Taking the idea for Mario, mashing it
together with the ideas of Break Out,

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and ultimately produced using Stanford's
portable library, her own version,

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her own graphical version, of Mario.

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Let's take a look.

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[VIDEO PLAYBACK]

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BRENDA ANDERSON: So I recreated
Mario using the pset4 SPL library.

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To use the number of steps,
press the Build button, press Go,

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and Mario jumps to the top.

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>> [END VIDEO PLAYBACK]

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>> DAVID MALAN: Now
another post that caught

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our eye was posted
here by Susan from LA.

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She writes, "Hello.

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I'm posting this for my son, who is
12 and too young for his own Facebook

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account.

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He has been stuck trying to figure
out a little code and Mario.

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He can't figure out how
to make the zero to 23

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without writing, or hard coding,
zero, one, two, et cetera.

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Is this the only way?

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By the way has watched videos of
classes, watched the walkthroughs,

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and read how stuff works
and is still stuck.

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Thanks, Susan."

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>> So what was touching about
this post was not only

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Susan reaching out on behalf of her
son, but just how many of her son's

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classmates reached out
with some helpful tips.

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For instance we'd like to acknowledge,
in particular, Paul from the United

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Kingdom, picture here, who chimed
in with some helpful advice.

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Mark, also from the United Kingdom,
who simply offered some counsel.

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And Chris, pictured here,
apparently in his car.

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Now Susan, at the end
of the day, responded

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as follows, "Paul, thank you so much!

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It works now and he is smiling.

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I am sorry I am no
help at all with this,

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I really appreciate
everyone's time and advice."

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Thank you as well from CS50.

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>> Now pictured here is Brad Williams,
apparently in avatar form.

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And Brad actually
posted this to Facebook,

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something he mocked up in Photoshop
as helpful suggestion for something

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we might integrate
into CS50 live episode.

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In particular, he suggested
that on the next CS50 someone

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should replace the green
screen with tie dye.

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So as much as we appreciate
all the effort we're sure

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went into this Photoshop mock-up, this
is an academic courses at Harvard.

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It's a computer science course,
no less, particularly rigorous

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at Harvard University.

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It simply wouldn't be
appropriate for us to mess

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with things like the green
screen for non-serious purposes.

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But thank you, nonetheless,
for the suggestion.

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And, in fact, I also have
to apologize to Kevin

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from Missouri, who similarly
tweeted this suggestion, "Put

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davidjmalan in front of the Matrix code.

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He is the One."

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So here too, love the
movie-- the first one.

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The second and third,
not so much-- but here

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too, not really appropriate
for this beautiful studio

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here at Harvard University.

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But thank you for the suggestion.

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>> Now frankly, if we're going to go
anywhere with this green screen

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is not going to be in the Matrix.

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I think it's probably more likely to
be on a sunny beach somewhere sipping

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frozen drinks.

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Now, thank you to all,
though, for the suggestion.

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>> Now even more popular this year then
desk lamps has been Google Glass.

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In fact, you've never
seen so many students

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in CS50 coming up to
chat after a lecture,

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really to see demonstrations
of Google Glass.

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But that's been great, particularly
since Google Glass allows you--

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it turns out-- to
develop software for it.

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In fact, one of CS50's
own Teaching Fellows,

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Christopher Bartholomew has
his own pair of Google Glass.

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And it turns out he himself has done
some software development for it.

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He kindly agreed to go on a
stroll with me recently to tell us

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00:12:32,840 --> 00:12:36,354
and show us a bit more of Google Glass.

236
00:12:36,354 --> 00:12:37,020
[VIDEO PLAYBACK]

237
00:12:37,020 --> 00:12:38,140
CHRISTOPHER BARTHOLOMEW:
Hey, did you want to talk?

238
00:12:38,140 --> 00:12:38,840
DAVID J. MALAN: Hey, yeah.

239
00:12:38,840 --> 00:12:39,923
You want to go for a walk?

240
00:12:39,923 --> 00:12:41,910
CHRISTOPHER BARTHOLOMEW: Yeah, sure.

241
00:12:41,910 --> 00:12:43,135
I want to bring my coat.

242
00:12:43,135 --> 00:12:45,755

243
00:12:45,755 --> 00:12:47,290
You're wearing your glass finally.

244
00:12:47,290 --> 00:12:48,260
>> DAVID J. MALAN: Yeah
this is the first time

245
00:12:48,260 --> 00:12:50,310
I've had these on since class ended.

246
00:12:50,310 --> 00:12:52,420
>> CHRISTOPHER BARTHOLOMEW:
Are you enjoying them or?

247
00:12:52,420 --> 00:12:52,970
>> DAVID J. MALAN: It's OK.

248
00:12:52,970 --> 00:12:55,110
I haven't found much of a
use case personally, yet.

249
00:12:55,110 --> 00:12:58,010
But it did turn out great
for CS50's lectures.

250
00:12:58,010 --> 00:12:58,620
We ended up--

251
00:12:58,620 --> 00:12:59,150
>> CHRISTOPHER BARTHOLOMEW: Definitely.

252
00:12:59,150 --> 00:13:00,210
>> DAVID J. MALAN: --putting
them on students any time

253
00:13:00,210 --> 00:13:01,210
they came up on stage.

254
00:13:01,210 --> 00:13:02,590
Then we would have some shots.

255
00:13:02,590 --> 00:13:05,244
>> CHRISTOPHER BARTHOLOMEW: I mean
I must have counted at least--

256
00:13:05,244 --> 00:13:09,860
probably at least 100 times I've
handed out my glass to strangers

257
00:13:09,860 --> 00:13:15,185
in all different cases and
showed them how it works.

258
00:13:15,185 --> 00:13:16,310
Look both ways.

259
00:13:16,310 --> 00:13:17,741
>> DAVID J. MALAN: Oh, yeah.

260
00:13:17,741 --> 00:13:19,497
I rarely do that.

261
00:13:19,497 --> 00:13:21,080
CHRISTOPHER BARTHOLOMEW: Go over here.

262
00:13:21,080 --> 00:13:24,585

263
00:13:24,585 --> 00:13:26,335
To show people what
you're actually seeing

264
00:13:26,335 --> 00:13:29,870
is a very important aspect
of just the technology.

265
00:13:29,870 --> 00:13:32,810
I mean that's what-- to be able to
connect with somebody very easily,

266
00:13:32,810 --> 00:13:34,380
no matter where you are.

267
00:13:34,380 --> 00:13:36,380
DAVID J. MALAN: What about
the privacy concerns?

268
00:13:36,380 --> 00:13:39,480
Given that the whole time I could of
been recording what you're saying.

269
00:13:39,480 --> 00:13:40,896
>> CHRISTOPHER BARTHOLOMEW: Sure, so.

270
00:13:40,896 --> 00:13:42,599
DAVID J. MALAN: Ironically.

271
00:13:42,599 --> 00:13:45,140
CHRISTOPHER BARTHOLOMEW: I get
this question a lot, you know.

272
00:13:45,140 --> 00:13:46,220
I don't know.

273
00:13:46,220 --> 00:13:51,170
I think in some sense
or another I don't know

274
00:13:51,170 --> 00:13:54,625
why I would be recording people for
any other reasoning besides if I

275
00:13:54,625 --> 00:13:56,220
was at a concert or something.

276
00:13:56,220 --> 00:14:00,240
For me, it's just it's
an immoral thing to do.

277
00:14:00,240 --> 00:14:03,330
If you want to step on someone's
privacy, you can do that.

278
00:14:03,330 --> 00:14:04,480
But otherwise.

279
00:14:04,480 --> 00:14:07,060
I have a great video when I
was at the World Series game.

280
00:14:07,060 --> 00:14:11,560
I turned it on and I was like, Big
Papi's going to hit a home run here.

281
00:14:11,560 --> 00:14:17,060

282
00:14:17,060 --> 00:14:19,560
And he did.

283
00:14:19,560 --> 00:14:24,131
And you could just see everybody's
experience from the actual fan, right?

284
00:14:24,131 --> 00:14:25,130
And that was really fun.

285
00:14:25,130 --> 00:14:28,220
And my hands are up
like yeah it happened.

286
00:14:28,220 --> 00:14:31,130
>> DAVID J. MALAN: I will admit it
can definitely be used for evil.

287
00:14:31,130 --> 00:14:33,131
But as soon as you have
facial recognition built

288
00:14:33,131 --> 00:14:35,254
in to this sort of thing,
it would be amazing to be

289
00:14:35,254 --> 00:14:37,795
able to be walking down the
street, someone waves hi to you.

290
00:14:37,795 --> 00:14:40,295
You don't really remember where
you know them from and boom,

291
00:14:40,295 --> 00:14:42,320
it's Alice or Bob from such and such.

292
00:14:42,320 --> 00:14:44,570
And have those little visual cues
would actually be pretty powerful.

293
00:14:44,570 --> 00:14:45,986
>> CHRISTOPHER BARTHOLOMEW: That too.

294
00:14:45,986 --> 00:14:48,600
I mean I think I was called
my peanut butter problem.

295
00:14:48,600 --> 00:14:52,500
Where I would want something to decide
what peanut butter I would like more.

296
00:14:52,500 --> 00:14:55,750
I'd love to have Glass look
at both of them and I go,

297
00:14:55,750 --> 00:14:57,250
find me the best peanut butter here.

298
00:14:57,250 --> 00:15:02,380
And it would go back and
based upon my own settings.

299
00:15:02,380 --> 00:15:09,037
My own wants or likes or whether it's
healthy or whether the peanuts are--

300
00:15:09,037 --> 00:15:11,620
DAVID J. MALAN: How much thought
have you given this use case?

301
00:15:11,620 --> 00:15:13,284
CHRISTOPHER BARTHOLOMEW: A lot.

302
00:15:13,284 --> 00:15:14,950
DAVID J. MALAN: Why is it peanut butter?

303
00:15:14,950 --> 00:15:16,590
CHRISTOPHER BARTHOLOMEW: Just
weird situations like that.

304
00:15:16,590 --> 00:15:18,020
DAVID J. MALAN: Yes, a
weird situation indeed.

305
00:15:18,020 --> 00:15:18,556
CHRISTOPHER BARTHOLOMEW:
I don't want to have

306
00:15:18,556 --> 00:15:20,870
to sit there and Google
all these different things.

307
00:15:20,870 --> 00:15:25,380
I just want it to figure out for me,
when it sees it, it acts upon my wants

308
00:15:25,380 --> 00:15:26,047
and it delivers.

309
00:15:26,047 --> 00:15:28,088
DAVID J. MALAN: Do you
want to do a couple demos?

310
00:15:28,088 --> 00:15:28,880
Maybe weather and--

311
00:15:28,880 --> 00:15:30,129
CHRISTOPHER BARTHOLOMEW: Yeah.

312
00:15:30,129 --> 00:15:30,840
I mean, so.

313
00:15:30,840 --> 00:15:31,630
>> DAVID J. MALAN: Google searches?

314
00:15:31,630 --> 00:15:32,050
>> CHRISTOPHER BARTHOLOMEW: Sure.

315
00:15:32,050 --> 00:15:34,040
So the first thing
that you can do here is

316
00:15:34,040 --> 00:15:37,970
if you just swipe back a couple
times, you can see weather.

317
00:15:37,970 --> 00:15:40,200
Another one, if you
just lean up your head--

318
00:15:40,200 --> 00:15:42,980
There's two ways to activate
the OK Glass option.

319
00:15:42,980 --> 00:15:46,010
One of which is just by tapping
and then when you see OK Glass,

320
00:15:46,010 --> 00:15:50,020
you can literally say OK Glass and that
will give you a list of menu options

321
00:15:50,020 --> 00:15:51,120
that are available to you.

322
00:15:51,120 --> 00:15:52,680
>> DAVID J. MALAN: So do you have
people that walk by you occasionally

323
00:15:52,680 --> 00:15:53,698
and be like OK Glass?

324
00:15:53,698 --> 00:15:55,495

325
00:15:55,495 --> 00:15:58,370
CHRISTOPHER BARTHOLOMEW: I'll have
friends who-- I'll kind of look up

326
00:15:58,370 --> 00:16:00,078
and they know I'm
about to do something--

327
00:16:00,078 --> 00:16:02,870
and they'll just be like OK
Glass, google pictures of whatever

328
00:16:02,870 --> 00:16:07,090
and then insert whatever in there.

329
00:16:07,090 --> 00:16:13,530
And then all of a sudden my glass
screen gets planted with pictures.

330
00:16:13,530 --> 00:16:18,710
When I was doing the Google Foundry,
when we were testing it for first time,

331
00:16:18,710 --> 00:16:21,560
everyone went up to this fruit
stand to take pictures of.

332
00:16:21,560 --> 00:16:24,110
And then it was crazy
because everybody's things

333
00:16:24,110 --> 00:16:27,170
would start going off because
it's not person dependent.

334
00:16:27,170 --> 00:16:30,850
If everybody said OK Glass at once,
you could set off other people's.

335
00:16:30,850 --> 00:16:33,640
This chain reaction
would occur with that.

336
00:16:33,640 --> 00:16:36,070
But otherwise there's
a lot of different--

337
00:16:36,070 --> 00:16:39,410
I mean it really comes down to all
the applications that are available.

338
00:16:39,410 --> 00:16:42,440
So as long as people and
developers are making more apps,

339
00:16:42,440 --> 00:16:45,160
there will be more things
that you can do with Glass

340
00:16:45,160 --> 00:16:47,642
but it's taking some time.

341
00:16:47,642 --> 00:16:48,850
DAVID J. MALAN: Almost there.

342
00:16:48,850 --> 00:16:50,891
CHRISTOPHER BARTHOLOMEW:
We need more developers.

343
00:16:50,891 --> 00:16:54,062
Come on, David, you
got to churn them out.

344
00:16:54,062 --> 00:16:55,145
DAVID J. MALAN: All right.

345
00:16:55,145 --> 00:16:57,040
So I'm not sure I can
stay outside much longer.

346
00:16:57,040 --> 00:16:57,870
Shall we head back?

347
00:16:57,870 --> 00:17:00,120
>> CHRISTOPHER BARTHOLOMEW:
Yeah, that's completely fine.

348
00:17:00,120 --> 00:17:02,922

349
00:17:02,922 --> 00:17:04,755
DAVID J. MALAN: It was
15 degrees, you said?

350
00:17:04,755 --> 00:17:06,005
CHRISTOPHER BARTHOLOMEW: Yeah.

351
00:17:06,005 --> 00:17:10,210

352
00:17:10,210 --> 00:17:13,430
>> DAVID J. MALAN: And now 60
seconds of peanut butter.

353
00:17:13,430 --> 00:17:15,750
>> [MUSIC -- BUCKWHEAT BOYZ, "PEANUT BUTTER
 JELLY TIME"]

354
00:17:15,750 --> 00:18:08,631

355
00:18:08,631 --> 00:18:09,464
[END VIDEO PLAYBACK]

356
00:18:09,464 --> 00:18:11,540
DAVID J. MALAN: 60
seconds of peanut butter.

357
00:18:11,540 --> 00:18:15,890
So we also had occasion to go for a
stroll with CS50's own Jason Hirschhorn

358
00:18:15,890 --> 00:18:17,187
into our studio recently.

359
00:18:17,187 --> 00:18:19,520
And Jason, too, we presented
with a pair of Google Glass

360
00:18:19,520 --> 00:18:21,311
so that we could take
a more technical look

361
00:18:21,311 --> 00:18:25,520
at exactly how the technology works.

362
00:18:25,520 --> 00:18:26,310
Jason Hirschhorn.

363
00:18:26,310 --> 00:18:26,976
>> [VIDEO PLAYBACK]

364
00:18:26,976 --> 00:18:29,720
We're here today with Jason,
one of CS50's Teaching Fellows.

365
00:18:29,720 --> 00:18:32,270
Whom you may know from
CS50's weekly sections.

366
00:18:32,270 --> 00:18:33,130
Jason, hello.

367
00:18:33,130 --> 00:18:34,880
JASON HIRSCHHORN:
David, great to be here.

368
00:18:34,880 --> 00:18:36,820
I love teaching CS50 sections.

369
00:18:36,820 --> 00:18:38,490
I've done it for two years now.

370
00:18:38,490 --> 00:18:40,690
And it's so much fun both
to teach students here

371
00:18:40,690 --> 00:18:43,734
and to allow the videos to be
shared throughout the world.

372
00:18:43,734 --> 00:18:45,150
DAVID J. MALAN: Well that's great.

373
00:18:45,150 --> 00:18:49,210
And I see you came wearing your
Disneyland name tag with Jason on it.

374
00:18:49,210 --> 00:18:51,830
But you are, to my knowledge,
the only CS50 Teaching

375
00:18:51,830 --> 00:18:53,664
Fellow who's been fired
from Disneyland, no?

376
00:18:53,664 --> 00:18:55,871
JASON HIRSCHHORN: Well to
be fired you have to hired.

377
00:18:55,871 --> 00:18:57,540
So I wasn't really tired.

378
00:18:57,540 --> 00:19:01,160
And I worked there for a week
on the Indiana Jones Adventure

379
00:19:01,160 --> 00:19:03,260
and then it just didn't
work out, unfortunately.

380
00:19:03,260 --> 00:19:03,700
>> DAVID J. MALAN: Really?

381
00:19:03,700 --> 00:19:05,575
>> JASON HIRSCHHORN: But thankfully
you still took me back in CS50.

382
00:19:05,575 --> 00:19:06,130
>> DAVID J. MALAN: No, we did.

383
00:19:06,130 --> 00:19:07,421
We were happy to have you back.

384
00:19:07,421 --> 00:19:10,110
In fact, as some of you know
who've watch the sections online,

385
00:19:10,110 --> 00:19:13,780
two years ago Jason came
to us in CS50 wearing

386
00:19:13,780 --> 00:19:17,110
a pumpkin suit for one of his
sections, roughly around Halloween,

387
00:19:17,110 --> 00:19:17,751
if you recall.

388
00:19:17,751 --> 00:19:19,750
In fact, for those of you
who haven't seen this,

389
00:19:19,750 --> 00:19:22,410
let me grab our pair of Google
Glass here from lectures

390
00:19:22,410 --> 00:19:26,530
and see if we can't dig this up online.

391
00:19:26,530 --> 00:19:32,968
OK glass, google video of
Jason dressed as pumpkin.

392
00:19:32,968 --> 00:19:33,468
There it is.

393
00:19:33,468 --> 00:19:34,509
JASON HIRSCHHORN: Oh boy.

394
00:19:34,509 --> 00:19:37,360
So you might be asking yourself
what's with the giant pumpkin?

395
00:19:37,360 --> 00:19:40,570
Well of course, tonight is Halloween.

396
00:19:40,570 --> 00:19:44,470
>> DAVID J. MALAN: So the next year you
came back and were a little deflated.

397
00:19:44,470 --> 00:19:47,540
Your suit, in fact,
had lost a bit of wind.

398
00:19:47,540 --> 00:19:48,390
What happened there?

399
00:19:48,390 --> 00:19:49,250
>> JASON HIRSCHHORN: Well
first I don't if I

400
00:19:49,250 --> 00:19:51,416
like that these videos can
be pulled out right away,

401
00:19:51,416 --> 00:19:55,380
but-- the second time
I had to suit, I forgot

402
00:19:55,380 --> 00:19:57,730
the fan that is necessary
to keep it inflated.

403
00:19:57,730 --> 00:20:00,640
So I had to stuff some pillows
and other clothes inside.

404
00:20:00,640 --> 00:20:03,341
But I certainly took a lot of
flack for that from my students.

405
00:20:03,341 --> 00:20:03,840
From--

406
00:20:03,840 --> 00:20:06,120
>> DAVID J. MALAN: Well in the
online, anonymous, feedback form

407
00:20:06,120 --> 00:20:06,830
that you have in your section.

408
00:20:06,830 --> 00:20:07,180
>> JASON HIRSCHHORN: Right.

409
00:20:07,180 --> 00:20:09,380
People are allowed to give me
anonymous feedback because it

410
00:20:09,380 --> 00:20:11,296
helps me improve my
teaching, but they've also

411
00:20:11,296 --> 00:20:13,120
used it to critique my outfits.

412
00:20:13,120 --> 00:20:14,790
Particularly the deflated costume, so.

413
00:20:14,790 --> 00:20:15,560
>> DAVID J. MALAN: Well, good.

414
00:20:15,560 --> 00:20:17,300
Well as interesting as
this is, why don't we

415
00:20:17,300 --> 00:20:18,690
take a chance to
actually play with Glass?

416
00:20:18,690 --> 00:20:21,440
Besides the pair here that we've
been using in lectures this year,

417
00:20:21,440 --> 00:20:23,710
we also-- in recognition
for all of your efforts

418
00:20:23,710 --> 00:20:26,470
this year-- got you your
own pair of glass here.

419
00:20:26,470 --> 00:20:26,970
>> JASON HIRSCHHORN: Oh my goodness.

420
00:20:26,970 --> 00:20:27,860
>> DAVID J. MALAN: To wear just for today.

421
00:20:27,860 --> 00:20:28,818
>> JASON HIRSCHHORN: Okay.

422
00:20:28,818 --> 00:20:32,400
DAVID J. MALAN: But for those
unfamiliar with how Glass itself works.

423
00:20:32,400 --> 00:20:36,050
So notice here, we have a battery pack
which is what powers the whole device.

424
00:20:36,050 --> 00:20:38,010
Over here we have just
the on off switch.

425
00:20:38,010 --> 00:20:40,450
In the front of the device,
we have effectively the CPU

426
00:20:40,450 --> 00:20:42,830
and all the other brains
behind the device.

427
00:20:42,830 --> 00:20:44,780
In the front, we have
the front facing camera

428
00:20:44,780 --> 00:20:47,080
and this is what students
were using to actually

429
00:20:47,080 --> 00:20:49,670
capture the perspective
of them on stage.

430
00:20:49,670 --> 00:20:51,770
>> And then lastly, the
piece of glass itself

431
00:20:51,770 --> 00:20:54,620
which works as follows, inside
of here is not only the camera

432
00:20:54,620 --> 00:20:58,130
but a data projector of sorts
that sends the image of this way.

433
00:20:58,130 --> 00:21:00,410
The prism then reflects
it this way into your eye

434
00:21:00,410 --> 00:21:03,030
and so that's why you see the
overlay of a rectangular screen

435
00:21:03,030 --> 00:21:03,930
right above your eye.

436
00:21:03,930 --> 00:21:05,200
If you'd like to try that out.

437
00:21:05,200 --> 00:21:06,830
>> JASON HIRSCHHORN: Fantastic.

438
00:21:06,830 --> 00:21:09,020
>> DAVID J. MALAN: So once
you put it on, by default,

439
00:21:09,020 --> 00:21:11,103
once you tap it you should
see the main menu which

440
00:21:11,103 --> 00:21:13,976
shows the current time
and then a secret phrase.

441
00:21:13,976 --> 00:21:16,350
So if you want to go ahead
and utter that phrase and then

442
00:21:16,350 --> 00:21:19,290
Google something like
whatever comes to mind first.

443
00:21:19,290 --> 00:21:21,290
>> JASON HIRSCHHORN: OK.

444
00:21:21,290 --> 00:21:22,540
Let's try this now.

445
00:21:22,540 --> 00:21:24,120
OK glass.

446
00:21:24,120 --> 00:21:27,454
Google pictures of puppies.

447
00:21:27,454 --> 00:21:30,370
DAVID J. MALAN: And the funny thing
is because we're sitting so close,

448
00:21:30,370 --> 00:21:31,930
my Glass heard that too.

449
00:21:31,930 --> 00:21:32,822
There it is.

450
00:21:32,822 --> 00:21:34,150
First thing that came to mind.

451
00:21:34,150 --> 00:21:36,460
So we can do more powerful things too.

452
00:21:36,460 --> 00:21:40,630
So to go back, go ahead and just
swipe downward on your temple.

453
00:21:40,630 --> 00:21:42,467
On the bridge of the lenses here.

454
00:21:42,467 --> 00:21:44,550
All right, so you should
be back at the main menu.

455
00:21:44,550 --> 00:21:44,940
>> JASON HIRSCHHORN: I am.

456
00:21:44,940 --> 00:21:46,670
>> DAVID J. MALAN: All right and
this time I'll do it myself,

457
00:21:46,670 --> 00:21:49,470
but speak loud enough so both
of our glasses pick this up.

458
00:21:49,470 --> 00:21:53,710
OK glass record a video.

459
00:21:53,710 --> 00:21:56,067
And I see you.

460
00:21:56,067 --> 00:21:57,650
JASON HIRSCHHORN: Voila I see you too.

461
00:21:57,650 --> 00:22:00,275
DAVID J. MALAN: All right and go
ahead and hit the button quick

462
00:22:00,275 --> 00:22:02,620
so we can extend this
beyond just 10 seconds.

463
00:22:02,620 --> 00:22:05,036
So what's also neat with glass
is, besides all these built

464
00:22:05,036 --> 00:22:07,520
in applications, you actually
develop your own applications

465
00:22:07,520 --> 00:22:09,780
using the GDK, glass development kit.

466
00:22:09,780 --> 00:22:14,797
Which is more time than we have today to
dive into but certainly check that out.

467
00:22:14,797 --> 00:22:16,880
JASON HIRSCHHORN: I'd love
to be interested in it.

468
00:22:16,880 --> 00:22:17,790
I mean, totally interested that.

469
00:22:17,790 --> 00:22:18,750
I love to learn more about that.

470
00:22:18,750 --> 00:22:20,270
>> DAVID J. MALAN: So you'd love to
be interested in learning more

471
00:22:20,270 --> 00:22:21,770
about Google Glass.

472
00:22:21,770 --> 00:22:23,260
>> JASON HIRSCHHORN: And I also
love that I have a video of you

473
00:22:23,260 --> 00:22:24,580
to remember this moment for.

474
00:22:24,580 --> 00:22:26,455
>> DAVID J. MALAN: No, this
is the great footage

475
00:22:26,455 --> 00:22:28,070
that I'm going to hang on to for sure.

476
00:22:28,070 --> 00:22:31,050
Well that's it then with Jason
Hirschhorn here and Google Glass.

477
00:22:31,050 --> 00:22:32,460
Thank you so much for joining us.

478
00:22:32,460 --> 00:22:32,970
>> JASON HIRSCHHORN: Thanks, David.

479
00:22:32,970 --> 00:22:34,678
>> DAVID J. MALAN: Great
to have you aboard.

480
00:22:34,678 --> 00:22:38,410

481
00:22:38,410 --> 00:22:39,960
Google.

482
00:22:39,960 --> 00:22:42,624
Photos of Jason Hirschhorn
dressed as a pumpkin.

483
00:22:42,624 --> 00:22:43,665
JASON HIRSCHHORN: Oh boy.

484
00:22:43,665 --> 00:22:45,530
I don't know if I want
people to see that.

485
00:22:45,530 --> 00:22:50,600
>> DAVID J. MALAN: Now it's photos of
Jason Hirschhorn dressed as a boy.

486
00:22:50,600 --> 00:22:51,900
OK.

487
00:22:51,900 --> 00:22:53,970
Stand by.

488
00:22:53,970 --> 00:22:56,820
Listening for music.

489
00:22:56,820 --> 00:23:00,857
Photos of Jason Hirschhorn
dressed as a pumpkin.

490
00:23:00,857 --> 00:23:01,690
[END VIDEO PLAYBACK]

491
00:23:01,690 --> 00:23:03,172
That's it for CS50LIVE.

492
00:23:03,172 --> 00:23:04,630
Thanks so much to this week's team.

493
00:23:04,630 --> 00:23:07,640
And remember, if you yourself
might like a CS50 desk lamp,

494
00:23:07,640 --> 00:23:09,530
let us know in video why.

495
00:23:09,530 --> 00:23:11,840
We can't wait to see the submissions.

496
00:23:11,840 --> 00:23:13,340
This was CS50.

497
00:23:13,340 --> 00:23:54,603
>> [MUSIC PLAYING]