I think that a “solution” could have that “so obvious” bias like you’re saying. I don’t think that natural phenomena necessarily has to though. I remember many ways that physics and other sciences describe how systems behave being obvious to the point I knew the lesson before it was taught (just without the correct terminology). Density, leverage, heat conduction, etc were just describing behaviors I think most people understand through experience without needing a class. We still credit a guy getting hit with an apple as the “discoverer” of gravity. He just got the clout for something everyone already knew.