```CHARLIE and AMITA lecture to a group of STUDENTS. On the
screen are various math problems.

CHARLIE
-- P versus NP, Cellular Automata,
Diffie-Hellman encryption...

AMITA
Linear Diophantine equations,
Euclid's Orchard, Bayesian
priors...

CHARLIE
Math, computer science, applied
physics, have broken out of the
classroom and unleashed their wrath
on the world.
```

Cellular Automaton Explorer »

Cellular automata are a central example of Stephen Wolfram's science, and of simple programs in the computational universe. Explore some of their amazingly rich and varied behavior here. See Wolfram's rule 30, and then choose more colors to explore rules that have probably never been seen before.
```                 CHARLIE
If by voodoo you mean Point-Pattern
Matching and Line Detection, yes.
```

Pattern Recognition Primer »

Pattern recognition algorithms are used to decide, for example, if a certain fish is salmon or sea bass, given the fish's width and lightness (Duda, 2000). Pattern recognition is the process of examining a pattern (e.g., the given width-lightness measurements) and assigning a class (e.g., salmon or sea bass) using a classifier (e.g., a rule based on the location of a graphical representation of the given sample with respect to other samples of the known class).
```Larry notices the videotape date stamp. October 30, 1991.

LARRY
This is the date you've been using?

CHARLIE
Yes. Why?

LARRY
You should be calculating for a new
moon.
(points to video)
See the frame? Nothing visible in
the sky. The date and time stamp on
the camera were incorrect.

CHARLIE
(realizing)
Of course... my dad never set the
clock on his VCR, either. LED
flashed 12:00 am for five years.
(then)
I need to look up --

LARRY
January 15th, February 14th, March
16th, April 14th, ditto for May,
June 12th, July 11th, August 10th,
September 8th, October 7th,
November and December... the 6th.

CHARLIE