Errors matter. When the system works, everything is fine. But when things break, which they do all the time... if there are good error messages, people are happy. If they are bad, people are very unhappy. All systems go wrong all the time.
This caused a bit of confusion when I got the delivery notification and saw that a 1 pound box I wasn't expecting had been delivered since I never buy that little of anything from them.
All Clear mode in Tetris Effect has a puzzle where the solution is to take the first line block, drop it in a 5 high gap, rotate it into a 5 wide horizontal gap, then spin it the other way to get it into the four high gap in the bottom, then spin the next block into the horizontal gap, which then leaves a four high for the last piece and yeah, I can do it but those should NOT be valid moves.
How much of being good with machines/computers is just not being afraid to push the buttons?
Author of Typica software for coffee roasters.