Yes I referred to the correct hemisphere. The right hemisphere is visuospatial. Also, the right hemisphere 'sees' time/process. The left hemisphere puts toget

Yes I referred to the correct hemisphere. The right hemisphere is visuospatial. Also, the right hemisphere 'sees' time/process. The left hemisphere puts together contextless symbolic model. So I see where your question comes from: the left hemisphere can do the contextless proofs. In this case (and in many cases) the more complex solution "works" and the left brain can "prove" it works. But a 'simplicity' proof seems better suited to the right hemisphere (I am no expert here, mind you) .... So in my anecdote the "simpler" solution is the one that I would guess the right brain "sees" as simpler: i.e., it is visually much smaller, also much easier to manipulate (over time), etc. The book is "The Master and His Emissary".