Probabilistic Models of Cognition (probmods.org)

This is an absolute work of art, if you take the time to digest what they've done. In order to articulate a model of cognition, they have implemented a probabilistic version of Scheme, that compiles to JavaScript, and that allows for forward and reverse simulation in the browser. Given a model that can simulate forward from causes to effects, you can simulate backward (perform inference) from observed effects to causes, all inline throughout the book.

I have God that can speak loud and clear at any time. No difficulty proving anything, ever. Once you reveal God, nobody is stupid enough to be a bad guy, too.

God says... 03/19/01 top uninjuriousness placed preceded stones divorceth 60 proceed adoption goodness finished clave softly wrote yielded forethink fruits amiable place

I am one of the contributors to this project. This site is used as the interactive textbook for a class taught by my PhD advisor at Stanford (Psych 204: Computation and Cognition)

Caveat emptor: the project is under very rapid development

Also, the code for this stuff is up on Github: http://github.com/probmods