It's true; with a little motivation and will power, it isn't too hard to figure out most machinery. Awhile back I was listening to a show on the radio. The discussion was about ancient Rome. Heads of Roman households had grown fat and lazy and hadn't bothered learning how to fix or repair anything because their slaves did all the grunt work. One day, the slaves had had it and decided to revolt. This slave revolt left the Roman masters holding the proverbial bag; they didn't know how to fix or repair ANYTHING.