Nah. If we take the US as an example they have rampant NIMBYism, a suburbanism ideology that isn't sustainable financially (or ecologically or socially, for that matter), and rather strict zoning, with the worst stemming from the city of Euclid, and thus being named "euclidean zoning".
If you're up for some videos, then StrongTowns, CityNerd and NotJustBikes all talk about this at length.
Humans also frequently need to try a wrong approach first to get the idea of a better approach, no matter if we're rested or not. Which is why it's important to be able to throw away prototypes rather than push an "it seemed like a good idea at the time" to prod.
But having a good sleep, walk in a park, shower, etc lets us think better than if we're just banging our heads in the same corner all day long. Breaks are important. General health, too.