Reading this part of the movie from the script, caused me to feel anxious, despite my own experience with shrooms in the past, being mostly positive. I still remember times during my trip, where I experienced a moment of confusion, that turned into fear, and thankfully, it didn't last for the entire experience! He really knows how to build tension and a sense of anxiety and dread, and I can't wait to watch the actual film now; even though it may be an intense visual experience.