One of the most solidly well written reports I've seen in a long time. A lot of this brings to my mind another 4-halogen-phenylalkylamine, 2C-I. The profoundity of the visual sensory experience and the associating feeling, mostly. I seems to me likely that from a cognitive standpoint, it's because of more preliminary neural constructs of vision are reached by the conscious 'space'. So, formation of experience out of more sensory data - these seem to let you explore that track, which is unbearably psychedelic with high intensity. I'd be pretty hesitant to take DOC for these reasons, because in that state there's not necessarily much promise of becoming normal again.