> Being angry, being happy, being sad, these are not things we learn.

True, but only sort of. You'll have the sensations, but you have to learn to name them of course, and there's more interpretation going on than you might think.

There's a classic psychology study where they gave people niacin and asked them to rate their emotional response to a video. Niacin gives people a flush. Regardless of whether the video was of something that would make you angry or sentimental etc. the people who got niacin reported having a much stronger emotional response - they interpreted the physical cue from the drug as part of their own emotions.

You could do some pretty unethical things with that, it occurs to me. Maybe that was what L. Ron Hubbard was trying with his niacin-based drug addiction therapy.

Even darker, I've read plenty of accounts of people who grew up with abuse who seem to seek out abusive relationships. Sometimes they can even be shockingly upfront about doing so. What if they literally haven't learned the difference between internal cues of arousal from affection and arousal from fear?