hang on this is going to be long winded, took a look at what I do for a living and couldn't explain it properly without going back a ways. Sorry
Spent my high school years being mentored by a man who could do just about anything, besides maintaining anything and everything at the school we bought surplus equip from the Portsmouth Naval yard for school use and sold a few pieces to raise money, had everything from a B-52 tug with a 6-72 2 stroke diesel to a Gallion road grader. A good deal of the school had burned down and we had to rebuild 7 buildings, even had a saw mill for the lumber (it was all post and beam construction). During that time I learned welding, machining, carpentry, logging, plumbing, electrical, heavy equip operator/mechanic, farming, too much to fully list. Out of high school no one would believe I could do the stuff I had learned so off to A&P school I went (for FAA airframe and powerplant mechanics license). After getting the license I went to work for a commercial satellite builder in Calif. Then moved from Calif to Kennedy Space Center for integration/test/handling of payloads that go on the shuttle and un-manned rockets. Worked on everything from Hubble Space Telescope to Space Station in jobs from technician and engineer to mgt. Now I work at a Helicopter company designing ground support equipment to keep the birds in the air. In my spare time I mess around with a number of things including motorcycles, cars, coal boilers/stoves/furnaces/etc in the belief that we need to stop throwing things out in this country and refurbish and reuse. So even though I make my living sitting at a computer (with precious few hours spent in the shop) I wouldn't be here without the thousands of hours spent learning through hands on activities.
A big salute to all those out there who make their livings as tradesman and those who have hobbies that involve same!