I'm sure my post 8 sounds a bit tough on engineers.
Actually, I never had the math-brains for that sort of work.
And I have lots of friends that ended up as Chem Engineers from my
"oiltown" home in Oklahoma.
It's just that most of their projects are so big...that on the rare occassions
that one is a screw-up...it's hard to miss.
As an engineer, we are used to dopes cracking on us. We generally only even care after we have had a few beers. The rest of the time, we just think those types are insignificant peons we ask to fill it with regular, please, and check the oil, too.