does anyone wonder why the npcs have the ability to think like normal human beings?

If you think that maybe it's an hidden pattern in the game, it's not that strange.
Or maybe they just made the NPCs more human, since they can make people taste food too

well if they are all A.I. it would be normal. the future is limitless after all ε=ε=(ノ≧∇≦)ノ