The single most important factor i've come to understand with psychedelics in a group environment is usually what you think is happening with someone else, is really whats happening with you; they act as a mirror to your insecurities.
Absolutely! One thing I get strangely often is the impression that a friend is about to break down crying or have an emotional episode. I often mistake people for being in this state (quite often while they're laughing hysterically) and ask them "What's the matter?!" only to discover that they're fine and it was all my head.
It took me a while to realise, but this is just a reflection of my own feelings. I've always been highly emotional person, and a good amount of LSD can really bring it out of me.
QFT, indeed.
