xeno6696: "As for transcendental functions being "in the mind of the mathematician" only, I used to think that too except you can observe PI, e, and the golden ratio in nature." > > No you can't. Only approximations to them. And probably only to a few decimal places. 3.14159, 2.71828, 1.61803 are probably more than sufficent for most purposes. - George is correct if you follow the discussion with Paul Davies here: - http://cosmiclog.msnbc.msn.com/archive/2007/04/19/160480.aspx - Davies insights into our 'biofriendly' universe have great import for this website.