The engine is only as accurate was what's calculated. This isn't nature and things just happen!

Yeah, things can overlap, if found the code will reposition them.

This depends on the version of course.<- !! All prior to the latest release don't have the enchancement.

...I'm thinking about making one in 3d.

And I didn't use any references for this. Just what I know. So that granted, I did pretty well.(i think)