There is no such thing as common sense! It's strictly knowledge. Am I right?

Okay, the two of my favorite examples I love to use when it comes to the "common sense" theory is COMPUTER WORK and GARAGE WORK. I have worked in garages where I couldn't properly wrap up a hose line or package a box properly if my life depended on it. If there was a ticking bomb in there and I had to drive, I'd probably sc up a few walls! However, I've ran into people where they couldn't do simple tasks on a computer, meanwhile it all seems like basic caveman common sense to me.