UNfortunately, organic chemistry plays a major part in biology, and is a helluvalot more complicated than straight chemical interactions. Wait till you\'re trying to identify interactions between molecules that have the same description, but numbers to tell you where they branch, or if they\'re branched off a ring formation or something... Throw in the odd ionic or polar molecule, and stuff gets REALLY irritating (Organic chem is my most hated course of all time).
example?
Hexane - C6H14 - straight chain.
Isohexane - C6H14 - Same friggin chemical formulae, oh, wait, it\'s got a chain coming off it, which you have to describe.
Cyclohexane - C6H12 - at least it\'s a different formulae. Same compounds but in a ringed structure.
Heh heh, wait till you hit shit like:
ethyl-1,1,3,3-tetramethylcyclopentane (yes, this exists, I had to go dig up my organic chem book to find a good example)
BACK on topic...
Length of a game is really only important for certain types of game.. like RPGs or immersive games. 10 hours really is a LONG time if it\'s all quality gaming time. Prince of Persia (the original) was a good game, but if you knew what you were doing, it took, what... 2 hours (5-10 the first time)? Yet one of the best games ever.. if they wanted, they could have made it 20 - 50 - 1000 hours long, the levels were pretty easy to program... but that would have SUCKED. It was a perfect balance of complexity/innovation to it\'s length.
A game that they say takes 10 hours, generally means it\'s about a 3-4 hour game if you sit there and follow a walkthrough, and 10-25 if you take your time, do it yourself, and explore all the possibilities.