The human face alone was made up of 44 muscles. Through the combination of blood vessels, nerves, bones, and cartilage, people could make more than five thousand expressions. Just the motion of laughter alone, there were already nineteen known types, and the smallest change in the facial muscles would contribute to a different form of complicated emotion.
For example, in front of six pictures of a man with his eyes closed and lips wide open, could you tell which one was excited from winning a game and which one was ecstatic from having his proposal accepted‽
You might think this was preposterous; even the most experienced actor would not be able to tell such minute difference. However, while most people could not do it, it did not mean that no one could.
