I have a kid works for me, 21, who never heard of a block & tackle. Last week, we used one for the first time in a couple years, and after we got past how really cool this thing was, I spent the lunch hour explaining 4 part lines, and how you only had to pull 25% of the weight, but 4 times as many feet as the lift was. I think he finally got the idea.
I constantly find myself appalled at how little these hids know, and how much self esteam they have, cause they learned to feel good about knowing nothing in school. I did an inventory of knowlege content in a High School Diploma back in 98, and figure I had to know more to get into 9th grade than today's kids know to get a High School Diploma.
The part that scares me is my Social Security is dependant on these kids being employed.