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DonaldMcIntyre comments on Is Determinism A Special Case Of Randomness? - Less Wrong
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People are not as random as you may think they are. You can test your own randomness here.
There is no need for true randomness to create random seeming behavior. Famous example is the weather. Even totally deterministic simulations of the weather are chaotic. Even slight changes to the initial conditions will result in totally different outcomes. Or in cryptography hashing functions, which generate random and irreversible strings from an input.
There are a number of examples of this covered in the book A New Kind of Science, but you can only view a few pages online for free without using incognito mode.
I think my possible argumentative error is:
P1: I observe free will in the behavior of living things.
P2: Deterministic physical mechanical processes don't permit free will.
C: Therefore physics must include random processes.
I think I only see a solution of free will in randomness, but maybe there are other solutions ( I will read the Free Will Sequence here on LW!)
P1 is wrong because it's impossible to observe free will. If free will equals randomness, and randomness is indistinguishable from non randomness for all practical purposes, then it's impossible to know if you live in a universe with free will or not.
However defining free will as randomness is really weird, which is what I tried to argue above. If randomness is determining your actions, that's not your will, and the result is meaningless. You don't gain any useful information by watching a coin flip.
I agree, both P1 and P2 are false because free will is unobservable to begin with.
This post and the exchanges with you and others have helped me advance my thinking a lot about these issues.
I am reading the Free Will Sequence too.