>Wikipedia doesn’t stop there; here’s their take on the metal-oxide-semiconductor field-effect transistor (MOSFET):

This stood out to me because I have contributed quite a bit to the Wikipedia entry for MOSFET.

This illustration does not appear on the Wikipedia entry for a MOSFET: https://en.wikipedia.org/wiki/MOSFET

It only appears on the Wikipedia entry for "hydraulic analogy". People do not learn electronics from the Wikipedia entry for "hydraulic analogy".

I assert that it is highly likely that not a single human being on earth has ever used the Wikipedia entry for "hydraulic analogy" to learn electronics. It is likely that several people have used that entry to learn about the hydraulic analogy.

Then again, I learned electronics from 1988's The Way Things Work, which uses Wooly Mammoths, large stone edifices, and titanically large humans so maybe I was trained on analogy from an early age and learned to not become too attached to them when they start to break down (like how Wooly Mammoths don't exist anymore).

edit: oh goodness I just looked it up and the hydraulic analogy for a circuit in The Way Things Work is utterly magnificent, fantabulous, funny, and educational. No mammoths, unfortunately.