The coffee maker does indeed come with a booklet that explains what various messages mean, and what actions need to be taken to address these issues. Those step

The coffee maker does indeed come with a booklet that explains what various messages mean, and what actions need to be taken to address these issues. Those steps are maybe two sentences long and generally self evident even without the booklet. People complain about that, because they think things should be handled and explained within the machine itself. I don't complain about coffee machines, but I agree with the principle. If I have to go searching through manuals to figure out what actions I need to take to get something working, that piece of software has failed at user interface design. Sometimes it's ok to fail at UI. I don't expect everything handed to me on a silver platter when I'm writing a bootloader for an 8051, but I do expect my tools to be reasonably user friendly. Vim isn't user friendly, and that understandably drives people away. Hell, even emacs can be a pain to work with.