I've never taken any psychedelics myself (so I guess you could call me a psychedelic layperson), but have read several experiences from people who have. One of the things my brain tends to do during it's 'down-time' is to try and interpret these experiences (from the point of view of someone who's not had any first-hand psychedelic experiences) and using my knowledge of neural networks and other geeky things, to try and figure out what is really going on, and hopefully in the process, to figure out the nature of conciousness. I expect this is something I'm almost certainly not going to achieve by myself and it may take several generations until a purely intellectual link is found between the experiences of a deep trip and the realm of scientific and philosophic explanation. Basically, this is attempting to solve the problem by approaching it from the other end. People like Terence McKenna try their best to bring back what they experienced on their trips, but are limited by the lack of established concepts related to what they saw - hence they don't have the tools to properly communicate these things. Because of this, their interpretations tend to focus more on the spiritual side of things than the intellectual side. What people on this side of the 'psychedelic divide' are doing is to try and construct the prerequisite concepts required to properly interpret the ramblings of Terence McKenna
After reading the comments to this Slashdot article and comments posted on the linked articles, some people say it's the closest to a trip they've ever experienced on a purely visual level. Because the article attempts to make sense of what is going on, this could be an important step in developing means of communicating the content of the psychedelic realm. We could also see implications at the other end and figure out exactly what the brain does when tripping - a gold-mine of information for understanding how the brain works.
One thing I've often wondered: what is an antomic unit of a psychedelic experience? My current theory is that any surreal juxtaposition that can break the mind out of the boundaries imposed by the Sapir–Whorf hypothesis could end up displacing the mind in an unknown state, and possibly even create a feedback-loop trying to make sense of it. Perhaps when tripping, the mind is automatically bombarded by so many of these experiences that they may end up gaining insight into the Ultimate Secret of the Universe. Perhaps this is what people who are 'trying to find God' are trying to find. So we could say that God is hiding behind a certain yet-to-be-entertained juxtaposition.
Can someone who's actually had a trip please confirm if I'm on to something, or if I'm just talking out my arse?