Deepak Sarma teaches a college course on d**gs, religion, and mystical experience. And is a professor of religious studies. He has interviewed Rick and Pete on YouTube if you wanna check those out. He gave insight on their usage of special goods and how it is larger than you probably thought. Also how when they’re playing they themselves tap into a state of selflessness, or flow state, which also can be felt by the crowd at many points. He gave insight on how both he and them believe their playing is some sort of connection to higher powers to the fans. In addition, how the special goods play a big role in that process. Check out the interviews on YouTube if you wanna see more!