I would agree. Could one not argue that even unsupervised learning is kind of reinforced by let's say the emotion you obtain from successfully performing a lea

I would agree. Could one not argue that even unsupervised learning is kind of reinforced by let's say the emotion you obtain from successfully performing a learning task? Then the reward signal does not come from the external environment but from resolving cognitive dissonance in the brain. Happy to be proved wrong by experts here.