Modelling or report error?

Maybe you are right about radians to degree conversion. But that’s something that should be fixed and it sound easy to me.
Why i use these tolerances? There are many cases here in the forum, especially when we discuss make2d errors that people from mcneel refers that problems occurs due to poor model tolerance. Take a look at this answer i get.

Truly i am in a situation i don’t know how to model properly.