Seniors should know their shit. If a junior doesn’t need help they’re either not doing their job or not a junior.

I think you haven’t met “problem solvers” as creative as the ones I’ve met. My first job out of college I built an inventory system for a small engineering firm. One of the engineers tried to solve his problem instead of asking for help. Once he gave up and called us, it took us an entire day just to figure out how he had managed to screw things up as badly as he did.