Just how accurate are the physics in Penumbra and in Amnesia?

[Bridge]

Do you live on planet Earth? Then you should know the answer; yes they are very accurate.

I was just curious so I do not know why you felt the need to be sarcastic just because I am trying to learn more about the game.

I'm sorry, I was just trying to say the effects of gravity on objects and animals on Earth can be observed by everybody. Therefore if a game's physics engine feels natural then it is accurate. If it doesn't and strange things occur (strange things do occur in Penumbra and Amnesia on occasion) then your suspension of disbelief is immediately broken and the inherent inaccuracy is immediately noticeable.

Using deductive reasoning you can conclude that if something behaves like it does in real life, it was programmed that way, because computers cannot do anything by themselves. The only way you can program realistic physics of course is to use the appropriate mathematical equations, so: HPL physics = realistic.