Fusion 360 is meant to be a more user friendly CAD software for the casual maker. Yet at the same time, the error messages are written in barely comprehensible technological gobbledegook. I've never looked at an error message in this program and then said to myself "ah, so that's what's wrong!", it's always been a case of reading the error message, being confused and googling my problem. If that's the case, why even have an error message? Just use some sort of error code.
See here:
What the heck does this actually mean?
My proposal is this: sweep through all of Fusion 360's error messages with a team of high schoolers. Any messages they don't understand get translated into layman's English. I'd much rather get a paragraph explaining what's wrong than a very compact 3 word message that makes no sense. Else, maybe you could link the error message to a help page instead where there's an explanation of what's happening.
tl;dr: Please make the error messages easier to understand! Plain English is greatly appreciated!