I said it elsewhere, but one of the first things I learned about power tools, from my father, is that if you don't know how to use a tool or tool setting, you don't use it.

Granted, power drills are moderately benign as these things go, but you can do a lot of damage to a work piece really fast if you select a tool or setting you're unfamiliar with. Which is why there manuals, books, videos, and classes to teach you.

Blogging about discoverability in the context of power tool interfaces is just peak software engineer naval gazing.