Far worse, though, when you have great idea, don’t do anything to develop it, and then years later someone else does it and all you can think to yourself is ‘Damn me, I saw this and could’ve been working on it all this time’.
I’ve experienced this in the context of the visual arts but it applies to just about any form of creativity. Never hesitate to be the cartographer of an unexplored idea. Walk its lands and swim its seas.