system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 : Why is the tongue more efficient than the fingers in spotting where the food is stuck between my teeth?
gpt
Any answer saying the tongue is more sensitive is wrong. It's definitely not about sensitivity. The fingers are super sensitive and can pick up differences, textures, stretch, general form factor a fraction of a millimeter and even less. The tongue cannot. 

It boils down to "maps." Your brain has a map of everything around you which it references as you move or interact with the thing. Some things are better represented visually (e.g. the map of a room is more eyesight based whereas for an instrument the map might be more touch and sound based). 

Your tongue has a better touch-based representation map of your mouth than your fingers do. The brain knows, based on the very same sensation of food, what muscles to contract to reach that food using a tongue, but not so much how to do so with fingers.

**Edit:** The tongue might be slightly better at certain forms of touch but altogether the fingers are way, way, way, way, way better tuned for all sorts of touch.