Just over two years dr numb where to buy in canada You’d be right if you said „micro scale” but it is definitely measurable (in approximations, not exact) on a macro scale. By taking a sample of relatively otherwise equal factors, we can determine which is random, and thus what is luck. E.g. if I measure a coin flip for 100 flips and see that they are equal heads and tails, then I can know that your prediction of getting heads correctly on the 101th flip is likely due to luck. (And yes, I can’t be positively sure, it could be some other factor I am missing, and that’s why the tests would be repeated by other independent experiments to filter out things like that). Science IS a science.