@davidaugust @Signez Makes for a great poster, but totally lacking nuance, therefore actually not true. See plane cockpits, video or music editors.
It's true for some user interfaces, but not all :-)

A user-interface-expected-to-be-used-successfully-seconds-after-being-seen-for-the-first-time is like a joke. If you have to explain it, it's not that good.

Closer to reality, but not a great poster!