How it works - declarative statement. This is how it works
How it works? - an unsure comment about it kind of works but unsure how/why is correct reason. i typically add additional ??? to help convey the unsure nature without using shrug emoji
How does it work? - interrogatory of wanting the answer
> an unsure comment about it kind of works but unsure how/why is correct reason
I'd never interpret it that it way. "It works(?)" or "It works?!?" I'd interpret that way, but "How it works?" to me is firmly questioning the statement itself, not how it works.
Leaving out the How totally changes it though. "It works?!?" means it's working but you don't know how/why nor really care. Kind of like everyone importing 3rd party libraries. It works, but don't care to know how. Just move that card to the done column. "How it works?!?" means there's an attempt at the explanation but it might not be the best explanation if even correct.
