Basically when talking about multiple particles, and using the term source, it would be clearer to say "source of x". Yet three times now you've just said "the

Basically when talking about multiple particles, and using the term source, it would be clearer to say "source of x". Yet three times now you've just said "the source". It seems needlessly confusing so I think there is some reason I'm not grasping that you keep saying "the source".