1
00:00:00,000 --> 00:00:04,440
Let me invite one other volunteer
to come on up who's got to be--

2
00:00:04,440 --> 00:00:05,490
OK, I see your hand here.

3
00:00:05,490 --> 00:00:05,970
What's your name?

4
00:00:05,970 --> 00:00:06,660
MEGAN: Megan.

5
00:00:06,660 --> 00:00:07,450
DAVID MALAN: Megan.

6
00:00:07,450 --> 00:00:11,010
All right, Megan, we have a
game for you called-- maybe

7
00:00:11,010 --> 00:00:13,410
I mentioned this--
[? IB's ?] hardest game.

8
00:00:13,410 --> 00:00:14,880
OK, come on up.

9
00:00:14,880 --> 00:00:16,200
Nice to meet you.

10
00:00:16,200 --> 00:00:18,510
This is a game by one of
your former predecessors,

11
00:00:18,510 --> 00:00:22,200
who their problems said
zero, implemented this.

12
00:00:22,200 --> 00:00:26,010
You'll see the instructions in
just a moment on the screen.

13
00:00:26,010 --> 00:00:30,980
We'll see if we can't inspire
some folks to root for you here.

14
00:00:30,980 --> 00:00:36,500
And after this, as is the tradition in
CS50, we will adjourn for some cake.

15
00:00:36,500 --> 00:00:39,920
So Megan, we have here for
you, [? IB's ?] hardest game.

16
00:00:39,920 --> 00:00:41,840
I'm going to go ahead
and maximize the window.

17
00:00:41,840 --> 00:00:43,700
I'm going to go ahead and click
Begin and we'll see the instructions.

18
00:00:43,700 --> 00:00:44,390
MEGAN: OK.

19
00:00:44,390 --> 00:00:45,350
DAVID MALAN: Good luck.

20
00:00:45,350 --> 00:00:46,820
MEGAN: Thanks.

21
00:00:46,820 --> 00:00:49,620
[MUSIC -MC HAMMER, "U CAN'T TOUCH THIS"]

22
00:00:49,620 --> 00:00:51,670
DAVID MALAN: Let's go
ahead and raise the volume.

23
00:00:51,670 --> 00:00:53,410
Here we go.

24
00:00:53,410 --> 00:00:55,490
[MUSIC -MC HAMMER, "U CAN'T TOUCH THIS"]

25
00:00:55,490 --> 00:00:56,770
(SINGING) Can't touch this.

26
00:00:56,770 --> 00:01:00,860
DAVID MALAN: So you're going to move
the arrow keys and navigate your way,

27
00:01:00,860 --> 00:01:03,080
essentially-- oh, yep-- through a maze.

28
00:01:03,080 --> 00:01:05,900
Notice Megan's not able to
go beyond the black borders

29
00:01:05,900 --> 00:01:09,590
because if touching edge, logic.

30
00:01:09,590 --> 00:01:13,010
Now when you touch the other sprite,
you advance to the next level.

31
00:01:15,620 --> 00:01:16,730
Two sprites now.

32
00:01:19,370 --> 00:01:20,540
Another Yale icon.

33
00:01:20,540 --> 00:01:23,080
(SINGING) From the Oaktown
and I'm known as such.

34
00:01:23,080 --> 00:01:26,000
And this is a beat you can't touch.

35
00:01:26,000 --> 00:01:26,840
I told you, homeboy.

36
00:01:26,840 --> 00:01:27,610
DAVID MALAN: Nice.

37
00:01:27,610 --> 00:01:28,110
OK.

38
00:01:28,110 --> 00:01:29,280
[LAUGHTER]

39
00:01:29,280 --> 00:01:31,370
(SINGING) Yeah, that's how
we living and you know.

40
00:01:31,370 --> 00:01:33,290
Can't touch this.

41
00:01:33,290 --> 00:01:35,180
Look in my eyes, man.

42
00:01:35,180 --> 00:01:37,120
DAVID MALAN: Nice.

43
00:01:37,120 --> 00:01:38,870
(SINGING) Yo, let me
but the funky lyrics.

44
00:01:38,870 --> 00:01:39,570
Can't touch this.

45
00:01:39,570 --> 00:01:44,550
[LAUGHTER]

46
00:01:44,550 --> 00:01:46,490
DAVID MALAN: Nice.

47
00:01:46,490 --> 00:01:47,950
[AUDIENCE GASPING]

48
00:01:47,950 --> 00:01:51,730
[APPLAUSE]

49
00:01:51,730 --> 00:01:53,820
(SINGING) Cold on a mission,
so pull them on back.

50
00:01:53,820 --> 00:01:59,280
Let them know that you're too much and
this is a beat, uh, they can't touch.

51
00:01:59,280 --> 00:02:00,240
Yo, I told you.

52
00:02:00,240 --> 00:02:01,860
[LAUGHTER]

53
00:02:02,690 --> 00:02:03,860
Why you standing there, man?

54
00:02:03,860 --> 00:02:04,970
Can't touch this.

55
00:02:04,970 --> 00:02:06,220
Yo, sounds the bells.

56
00:02:06,220 --> 00:02:07,610
School is in, sucker.

57
00:02:07,610 --> 00:02:09,270
Can't touch this.

58
00:02:09,270 --> 00:02:10,570
DAVID MALAN: OK.

59
00:02:10,570 --> 00:02:12,370
Good.

60
00:02:12,370 --> 00:02:12,870
Nice.

61
00:02:15,800 --> 00:02:16,790
[AUDIENCE GASPING]

62
00:02:16,790 --> 00:02:18,250
[LAUGHTER]

63
00:02:18,750 --> 00:02:21,720
(SINGING) Or a tape to learn
what's it going to take?

64
00:02:21,720 --> 00:02:23,560
And now he's going to burn the charts.

65
00:02:23,560 --> 00:02:25,010
DAVID MALAN: Oh!

66
00:02:25,010 --> 00:02:26,560
(SINGING) And you might as well quit.

67
00:02:26,560 --> 00:02:28,590
That's word because you know--

68
00:02:28,590 --> 00:02:29,940
DAVID MALAN: No!

69
00:02:29,940 --> 00:02:30,510
That's OK.

70
00:02:35,880 --> 00:02:36,380
Oh.

71
00:02:36,380 --> 00:02:36,880
It's OK.

72
00:02:40,340 --> 00:02:40,840
Nice.

73
00:02:45,830 --> 00:02:46,330
Ah!

74
00:02:52,430 --> 00:02:55,050
[INAUDIBLE]

75
00:02:55,050 --> 00:02:56,510
Oh!

76
00:02:56,510 --> 00:02:58,590
Couple more lives.

77
00:02:58,590 --> 00:02:59,090
Nice.

78
00:02:59,090 --> 00:02:59,590
Oh!

79
00:02:59,590 --> 00:03:05,390
[AUDIENCE GASPING]

80
00:03:05,390 --> 00:03:05,920
OK.

81
00:03:05,920 --> 00:03:07,160
Yeah, you got it.

82
00:03:07,160 --> 00:03:07,660
MEGAN: Yes.

83
00:03:07,660 --> 00:03:09,270
Yep.

84
00:03:09,270 --> 00:03:10,180
Oh my God.

85
00:03:10,180 --> 00:03:11,130
DAVID MALAN: All right.

86
00:03:11,130 --> 00:03:13,600
One more life-- two more lives!

87
00:03:13,600 --> 00:03:16,860
Three more lives!

88
00:03:16,860 --> 00:03:17,560
Come on.

89
00:03:17,560 --> 00:03:18,600
(SINGING) Bring the bill.

90
00:03:18,600 --> 00:03:19,720
School's back in.

91
00:03:19,720 --> 00:03:21,960
Break it down.

92
00:03:21,960 --> 00:03:23,420
DAVID MALAN: Yes!

93
00:03:23,420 --> 00:03:25,360
[APPLAUSE]

94
00:03:28,490 --> 00:03:29,240
MEGAN: Up, up, up.

95
00:03:33,270 --> 00:03:33,900
(SINGING) Stop.

96
00:03:33,900 --> 00:03:35,330
Hammer time.

97
00:03:35,330 --> 00:03:36,290
DAVID MALAN: All right.

98
00:03:36,290 --> 00:03:37,310
Last life.

99
00:03:37,310 --> 00:03:38,580
Go, go!

100
00:03:38,580 --> 00:03:39,080
Here we go.

101
00:03:42,020 --> 00:03:42,520
All right.

102
00:03:42,520 --> 00:03:44,290
Nice, nice.

103
00:03:44,290 --> 00:03:45,030
Yes, yes.

104
00:03:45,030 --> 00:03:47,420
Ah!

105
00:03:47,420 --> 00:03:47,920
All right.

106
00:03:47,920 --> 00:03:50,360
A round of applause
for Megan, if we could.

107
00:03:50,360 --> 00:03:50,950
Check her out.

108
00:03:50,950 --> 00:03:51,830
Here you go.

109
00:03:51,830 --> 00:03:55,490
[APPLAUSE]