Even more so, randomness as people usually use it exists independently of "true physical randomness." If I flip a typical coin in a typical manner, then regardless of whether quantum mechanics is truly random, a sufficiently detailed measurement fed into a sufficiently powerful computer can predict it essentially perfectly. It's a long way of saying a coin flip is close enough to deterministic in practice.
But there's something going on there that I can't predict, and we need a language to talk about it. That language is the same whether "true physical randomness" exists or not. Calling a coin flip "50-50" is just as valid in a deterministic universe as it is in a random one. Probability is a language more than a theory.
Too many people get hung up on "true" randomness, when that's probably not relevant to the the situation they're describing.
But there's something going on there that I can't predict, and we need a language to talk about it. That language is the same whether "true physical randomness" exists or not. Calling a coin flip "50-50" is just as valid in a deterministic universe as it is in a random one. Probability is a language more than a theory.
Too many people get hung up on "true" randomness, when that's probably not relevant to the the situation they're describing.