I expect we've all had engineering mentors, let's hear your best stories.
I won't count my Dad...more of him another day.
I once worked with a big grizzly bear of a man Jim Butcher (sadly gone) he was a county level archer and a high voltage & RF engineer.
I learned a lot from him...the one I remember best was having made one of my first decent bows from some Elm I took it into work to test it on a big spring balance.
He happened to meet me on the way into work...the bow wasn't even strung.
Silently he took it, looked along it, weighed it in his had, put one end against his foot and flexed it.....
He pursed his lips for a second...
'Sixty pounds' he said and walked off.
That lunch hour I took it to the evironmental lab, slowly drew it on the balance making notes of draw length and weight as I slowly got it back to full draw.
The final draw weight?
60lb