> Idea = “market + problem + opportunity”
that's quite far from idea, that's almost business plan
Imho business plan is way more than that and includes hiring plans, product timeline, marketing strategies etc.
While idea doesn't just come from "hey wouldn't it be cool if.." but usually entails a much deeper thought process about a market and an opportunity. Or at least it should.
So I'd say that every idea who didn't come from that understanding and observation is worthless, the ones that are conscious reasonings based on a lot of factors are not.
Deal? :)