> Answering what should exist and what the world is missing requires a vision for what you want the world to become.

Nonsense. All that's needed is asking around, and listen. You could literally throw the dice, go to random country X, and ask the 1st person you meet what would make their life better.

Maybe the gutter on their roof is leaking, and they need someone to fix it. If so, maybe there's more people with the same problem, and a gutter-fixer would make people happy.

Sure, if you have a 'grand vision' and (again, by asking around) find there's others sharing that vision, by all means go work on that. But to find something useful to work on, any 'vision' is really not required.

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