I'm still finding your comments a little confusing; and, now, bordering on the self-contradictory. I think you'll find that the proofs presented in the lower ma

I'm still finding your comments a little confusing; and, now, bordering on the self-contradictory. I think you'll find that the proofs presented in the lower maths tend to be of "the book" form and really overstate the simplicity and clarity available to mathematics 'at the edge'. On the flip side, modern engineering sometimes gets to benefit from the work of centuries and the final (refined) output of science: the solutions are very elegant!