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If this is true, then how is anything new invented?
People just add 1 and 1 together, taking two things they have seen in their lives and sticking them together. For example, it is logically impossible to invent a fire-pit before fire has been invented, or to invent a car tire before a car has been invented.
Radioactive decay is random, and so this brings the cycle out of order.
We are not sure if the way in which we think radioactive decay happens is true. It is called a Theory for a reason. There is probably a pattern present, but maybe we haven't found it yet.
But, to avoid sceptical regress we operate under best information available and so far there is no evidence of a pattern in radioactive decay.
In such a case you have to apply ockham's razor, which result in Superdeterminism which is, in my view, a much simpler and intuitive concept than Indeterminism.
On large scales everything is deterministic. And even on small scales, there are deterministic model which capture quantum behaviors.