I suspect that the issue arises from the difference in specificity about the desired result. When we say "astronaut riding a horse" we may have preconceptions b

I suspect that the issue arises from the difference in specificity about the desired result. When we say "astronaut riding a horse" we may have preconceptions but any astronaut riding any horse will likely be acceptable while asking for a specific proof of a result in mathematics has only a very few and very specific solutions. Effectively it is like the concept in math where the area of even a large number of points is effectively zero while even small polygons or regions is nonzero. Specific things like proofs are point like knowledge while the picture of an astronaut riding a horse is a surface.