So... you're saying randomness would be subjective / observer-dependent? Something can be random for one observer and deterministic for other, and that in all cases we can imagine an "outer" observer for whom anything can be deterministic?
...dunno why but this is one of those things that seem to me so incredibly intuitively obvious down to the bones of your mind, like in "how could even the thought of it being any other way" be possible :) I'd say it's just that modern physics doesn't want/need to have anything to do with such hypothetical "outer observers", so that's why we accept the convention of "true randomness" and work with it. And, it makes sense, otherwise you'd end up with science being polluted with useless metaphysics blabberings.
...dunno why but this is one of those things that seem to me so incredibly intuitively obvious down to the bones of your mind, like in "how could even the thought of it being any other way" be possible :) I'd say it's just that modern physics doesn't want/need to have anything to do with such hypothetical "outer observers", so that's why we accept the convention of "true randomness" and work with it. And, it makes sense, otherwise you'd end up with science being polluted with useless metaphysics blabberings.