It's not (probably) random in the sense of true, quantum mechanical randomness, but random can be thought of existing 'with respect to the certain knowledge'. S

It's not (probably) random in the sense of true, quantum mechanical randomness, but random can be thought of existing 'with respect to the certain knowledge'. So if you flip a coin and have as input the precise physics of the launched coin and the air, the result isn't random; if you only know 'a coin was flipped' then it's essentially random. So I imagine chaotic systems' outcomes seem random if you have only approximate the initial conditions (since small perturbations will greatly modify the outcome) (that's probably a good, equivalent definition of a chaotic system, also).