Great point! That's the question I'm asking myself too.
I'm erring on the side of moving on too quickly, rather than waiting too long, because I like to move fast and I've already made the mistake of spending way too long on something.
I think it's really non-obvious, and there aren't a lot of good heuristics that measure how long is long enough -- and it's my belief that most heuristics simply aren't aggressive enough. One of my mottos is "most limitations are conceptual and self-imposed," and I see a lot of self-imposed limitations in the SaaS community, mostly because people have no idea what can be achieved when you set really high goals... not sure why.
I'm erring on the side of moving on too quickly, rather than waiting too long, because I like to move fast and I've already made the mistake of spending way too long on something.
I think it's really non-obvious, and there aren't a lot of good heuristics that measure how long is long enough -- and it's my belief that most heuristics simply aren't aggressive enough. One of my mottos is "most limitations are conceptual and self-imposed," and I see a lot of self-imposed limitations in the SaaS community, mostly because people have no idea what can be achieved when you set really high goals... not sure why.