Pardon me while I pick my jaw off the floor.  I had heard stories about the random instances of absolutely obsessive attention to detail when modeling the physics&#x2F;chemistry of things in the game, but did not expect anything like that.<p>Out of curiosity, how do details about these things become known if the code is not open sourced?  Is it in official documentation somewhere?  Is there any sort of list of these ridiculous examples of awesomeness?