Will Rogers once said:

There are three kinds of men. The ones that learn by reading. The few who
learn by observation. The rest of them have to pee on the electric fence for themselves.

Interesting to note that he suggests learning only comes from input. I suspect output also can teach. We certainly learn from doing…

His last category fits Ranum’s notion about security and user education, although Ranum might have sounded more like “users have to pee on the digital fence…”, which of course would be electrified.