my Youngest son is 35, and has double degrees in Physics and Astronomical engineering.But his 96' Chrysler concorde had a flat once on the highway, and he couldn't tell how to hook up the jack. So he took a picture of the underneath and sent it to me. I had to tell him where to put it under the car. So he did, but he didn't think to break the lugs loose first. so, he had to let it back down so the wheel would touch the ground again. he could fly to mars, but mechanical things just seem to baffle young people. my Grandson is 14, and was sitting in the dart when I showed him how crank windows worked. He was astounded! He had never seen such a thing. What a hoot. These kids can't even read a clock with hands any more, as it isn't taught to them.