Emotions exist because a charging bear demands a response more flexible than a reflex and faster than a plan.

if you have a bear or a tiger, you know, something charging at you, that challenge requires a control of behavior that's intermediate between those two extremes. I can't have a reflex for a bear if it's far away or if it's close or if it's a rattlesnake or or or a tiger or all the different kinds of potential threats out there. Instead, I need something that's more flexible, which emotions are.