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by random_comment 3216 days ago
> At an atomic level, events are not deterministic. > At a molecular level, events are not deterministic. > Therefore, we all behave randomly. Qed.

This doesn't follow. The combination of many random events can be highly predictable.

Tossing a fair coin is random. Combining 10000 coin tosses will give you a result close to 5000 heads and 5000 tails, and I can predict you won't get 4000 heads and 6000 tails or 100 heads and 9900 tails.

So there's various types of randomness, and the more you average out uncorrelated events the more you get something very close to a predictable result.

Example via A. Einstein:

http://userpages.umbc.edu/~dfrey1/ench630/ein_ran_walk.pdf