Physics is shit

So you have this gravity law. But does particle attract itself?

I.e. does it work like (mapcar (lambda (X) (gravity X Xs)) Xs) or X should be excluded from Xs, before gravity applies?

>>25
sorry about the assumption.

The way I see it, models are always an approximation of reality. We can see patterns using our senses and our technology, and we can describe these patterns mathematically, and we can accurately predict what patterns will result in certain situations, but we can never really know what reality actually is. We can only see the consequences of what reality is, measure it, and make predictions about it. So in that sense math has nothing to do with what reality is. It's just a tool that can be used to describe and predict things that seem to always happen in it.