I have found that to be the norm of most people with higher education (well anyone who went to college right out of high school and never held a real working job EVER in their lives). Book smarts don't mean a damn thing out here in the real world were the rubber meets the road.
Yes, there are quite a few people with book smarts who couldn't, for example, recharge the freon in their own air conditioners.
However, eggheads thinking about such abstract impracticalities as how compression/expansion of gasses will effect temperature was something that had to be done for years before anyone could have an air conditioner in the first place.
Of course, further muddying the waters is the fact that it is possible to acquire a great deal of "education" with little other than the ability to study and memorize.