World only continues on because competent engineers left blueprints that smol-brains can still follow like recipes. Also because Thyssen-Krupp built elevators and other machines that last for 40+ yrs even in turd world
Ask a modern engineer to build a chariot from scratch....
math is ok. science isn't terrible, just metaphysically confused. but engineering is total garbage. these days one can get an engineering degree from a top school without actually building anything that works.