I fully agree, random today means one of the following very different things: - we know with certainty that it follows a <xy> distribution and there is no way

I fully agree, random today means one of the following very different things: - we know with certainty that it follows a <xy> distribution and there is no way we could know more - we don't know enough so it appears random to us. If I were forced to bet on one of these, I'd say it's always the latter except in the case of Heisenberg uncertainty. https://en.wikipedia.org/wiki/Uncertainty_principle https://en.wikipedia.org/wiki/Uncertainty_principle