Why do people laugh when they see jokes and things?

When a baby is young, he will giggle at his parents and remind them to think of him often. Before he was four months old and learned to say the first sentence, the baby's throat was already smiling. Even deaf or blind babies. Even thousands of years before humans learned to speak, our ancestors communicated with each other with laughter.

So we don't have to consider its source, just as we enjoy the brightness of the sun every day without considering how it comes from. We just need to laugh at your family, life, work and friends every day. Doing so is the greatest understanding of laughter!