The same day I read about Google's expanded enthusiasm for AI with everything, here is their featured snippet at top of search for "gravity vs altitude".

Bring on the Idiocracy!

@dhobern As a former game developer this last sentence makes perfect sense! The physics system does a raycast towards the ground, and if the ground is just below the player then gravity is not applied - to avoid bugs and save performance. I'd expect this to be how God implemented it too.
@matias @dhobern depends on the game, all the classic mario games for instance apply their downward "gravity" even while on the ground, it's really only modern physics systems that shortcut it like that. (it does change the feeling of certain motions like jumping very slightly on the windup frames)