[idolaspecus]

And it's much, much rarer but equally as important corollary: UTFM (Use TFM). UTFM means: when you're designing a system, adhere your design so f**ing tightly to standard usage. RTFM/UTFM with standard tooling gets you so, so far to building high-quality software.

Edit: I actually just made up (as far as I know) UTFM, but I really wish it were a thing.