[pbhjpbhj]

I'm not a programmer/dev, however ...

You can plan and plan and plan. Then start and realise that you should have _tried_ earlier because that informs the planning more (close the loop, iterate, go again). That's why prototypes/MVPs are a thing, surely.

[Demiurge]

I can see how this is possible, but I've never experienced it. On the contrary, I see people just do and do and waste effort and redo because of things that could have easily been foreseen with a plan based on input from all stakeholders. Meaning, yeah, I see someone make a plan on their own and inflict their plan on others, but that is just a bad plan.