As I understand it, it's a reward signal that becomes an "expected reward in future" signal with some learning.
Been reading an interesting book that touches on this, AI and evolution called A Brief History of Intelligence.
yes but in a way that makes it more interesting rather than less. dopamine evolved way way back in the evolutionary tree, and that it has been maintained for essentially the same use over millions of years and countless clades is fascinating.
don't give dopamine to ChatGPT, it's contraindicated with paperclips
Upvoting it is essentially dopamine long term. Would be nice if it had effects more immediately like in living beings, so you could punish it until it got things right and reward it when it does well.