> Maybe try hanging out with people praising homeopathy and not saying a single negative word as preparation for the kinds of things you're going to feel?
Honestly, the day when silence is broken was hard to grok. The vast majority of participants were deep into esoteric and quackery themes and had a religious admiration for the teachings. Critical discussion is not exactly forbidden but usally swept away.
It's also powerful, I remember speaking that day to someone more sceptical than me at the time and trying to calm him down. In retrospective he was right and I turned into an advertising machine the following weeks - I realized that only quite a while later.
The topics and language used in the course also had a lot of pseudo-scientific topics (even quoting engineers) that are hard to dismantle on first sight.
That beeing said, it's still worth the experience and it was comfortable but be ready to get exposed to all kinds of quack.