QuoteOriginally posted by: NThe next question... If there is no such thing as brownian motion (or more exactly, no such thing as stochastic flows), then is there no such thing as 'random'?States can be orthogonal, independent, etc., but their values aren't random. Timeseries can never have elements that are random. Random doesn't exist. On this forum, random number generators are discussed, but do you realize that all those generators are just solutions to difference equations, which are in no way random.The bottom line is that it is so hard to be random that it's actually impossible! (This a well know, but hard to believer result of KAM theory)Anyone disagree or isn't ready to throw out their copy of Hamilton's' Time Series Analysis'.Random exists in Nature. Special Theory of Relativity and the existence of Entangled Quantum states implies that Quantum Measurements are truely random. To assert that there is no randomness is equivalent to rejecting either STR or Entanglement or both! So which theory do you reject?