I presume that instead of calculating each and every "point" and "particle" in discreet form, they find the statistically correct result instead. Probably some

I presume that instead of calculating each and every "point" and "particle" in discreet form, they find the statistically correct result instead. Probably something similar to Vitter algorithm https://getkerf.wordpress.com/2016/03/30/the-best-algorithm-no-one-knows-about/ https://getkerf.wordpress.com/2016/03/30/the-best-algorithm-...