I’m an artist, and I’ll gaze at seemingly trivial things like reflections of a cup on a semi glossy surface, and then do an analysis of it in my head along the lines of “hmm…the reflection is at maybe 30-40% opacity, and the reflection falls off at more of an oblique angle, falling off completely by the time the reflection gets to half the cup’s height…the glossier the surface the less falloff there is and the sharper the reflection is!”