We have really over-indexed on this dopamine thing as a culture, I think. The important piece is the feeling of internal reward, not any specific chemical. The

We have really over-indexed on this dopamine thing as a culture, I think. The important piece is the feeling of internal reward, not any specific chemical. The role of dopamine is so, so much more complex than "make brain happy." I don't think the dopamine response of the physical act of typing is terribly relevant here, for example.