V G gmail.com> writes: > Question: generalize the colour of an apple. >=20 > Yes, you could compute the RGB value and average them but the answer > is meaningless. Because the question is meaningless. The answer is 42. If you do not like the answer, you need to ask a=20 better question.=20 More practical answer could be:=20 a set consisting of red, green and yellow.=20 Apples are never blue or black (at least not edible ones). >=20 > Biological and economical systems at least can be calculated > mathamatcally. Just not easy but theoretically can be done. How can > you calculate life? Biological systems cannot be calculated mathematically with a significant precision even for "simple" organisms like bacteria, at least not yet.=20 When you go up to multi-cellular organisms, the complexity growth=20 exponentially. Nevertheless, generalized models are quite useful and=20 often predict behavior of such systems. Not at the organism,=20 or individual, level, but on population level.=20 Similar "complexity" problems apply to economic models: one can model reasonably well a stable system, but only by making assumptions that allow simplification. Too many independent variable and unknown interactions.=20 P.S. I am speaking from experience trying to model both (bio- and econo-)=20 systems. Sergey Dryga http://beaglerobotics.com --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .