yes, if everything is deterministic, how does the random come from?we dont talk about religion here
it's just a ideal concept. like poisson. there's no real poisson.
consider tossing a coin. if your model includes the force of tossing it, trajectory, air dynamics, weight of the coin, height, etc, then you can determine which side it will be. So "randomness" is an ideal concept, everything in real-life is, to some extent, psudo-random... which is deterministic.
You may say I'm a dreamer
but I'm not the only one...