Laughter evolved at two different point in human development. First, they posited, at a point sometime sometime between 2 million and 4 million years ago, came Duchenne laughter, the kind triggered by something funny
Explanation:I was curious too and searched it on goggle lol
One of the most recent studies in laughter shows that laughing with others releases endorphins in the brain—our homegrown feel-good chemicals—via opioid receptors. The more opioid receptors a given person has in the brain, the more powerful the effect.
so that it could help them understand the ravenous wildfire with the season in the American west. they wanted it so that they could be able to use it for heat and other stuff to burn and keep warm
