Here's a REALLY exciting "paradox"!
If I stood upon open ground, on a clear day, my ~180deg. FOV would presumably allow me to see from the horizon on my left side, to the horizon on my right side. Because of the curvature of Earth, this horizon-to-horizon distance seems, by calculation, to be ~10km.
My computer monitor is ~15inches wide and occupies perhaps a 30deg. FOV when I'm sitting in a normal viewing position. However, if I move my face right up to the screen, my computer monitor then occupies ~180deg. FOV.
This means that my computer monitor has mysteriously expanded from 15inches wide, to 10km wide. And yet this is much bigger than my whole house! How is it possible that my 10km wide computer monitor still fits in my house, when I press my face up against it?!!!