Software is another example. Give me a new piece of software and I'll muddle around and see what the buttons do, like a normal person. Apparently many office workers demand an official tutorial and won't even touch the software until they've been "taught" to use it.
I wonder if they could be "taught" to use this:

My father is consistently amazed at my ability to successfully execute this algorithm several orders of magnitude faster than he can. Often I solve his problem by pointing out something on the same screen that he's been staring at for fifteen minutes.
(He should find some way of hiring himself out as a usability tester or something; if there's a way to misinterpret or overlook some option in a computer program, he'll find it.)
There's been a recent heavily upvoted and profusely commented post about things people want to learn. It's close to having so many comments in a single day that it should probably have a part 2.
However, the subject seems to inspire thoughts about what *other* people ought to know, and while that's got a good bit of overlap, it's emotionally rather different.
So, what do you think other people ought to know? Any theories about why they haven't learned it already? Any experience with getting someone else to learn something when it started out as your project rather than theirs, especially if the other person was an adult?