Fingers do not contain a single muscle, and all of the incredibly precise movements required to type, play instruments, or text your ex are controlled entirely by tendons pulled by muscles in your palms and forearms.

A closer look

Fingers do not contain a single muscle, and all of the incredibly precise movements required to type, play instruments, or text your ex are controlled entirely by tendons pulled by muscles in your palms and forearms. Your fingers are basically just fleshy biological marionettes operating on a complex pulley system operated from a distance. It completely ruins the illusion of manual dexterity when you realize your hands are just elaborate meat-claws being yanked around by remote-controlled strings, which makes it even more embarrassing when you repeatedly drop your phone flat onto your face in bed