Very well put Morfe, an intersting read. I haven't read the full pdf yet but did notice what looked like the authors seemingly inherent bias in the intro 'some maintain they dont exist', from my own understanding the burden is on the people who advocate these things exist rather than the yet-to-be-convinced to prove they dont. Kind of like asking people to prove 1,000,000 angels cannot dance on the head of a pin.

One thing that strikes me in this discussion is a hostility to 'science', I think science was born when one person turned to another and asked 'did you see/feel/hear that??' Science is just a process of affirming a certain thing is not imagined by the observer but exists outside the mind as an entity of itself. Cropredy on the other hand seems to work in the opposite direction ie. it exists in <i>my</i> concious therefore it exists and that is the proof in itself. The problem here is that the concious is only aware of what the subconcious tells it, can we really believe our eyes/ears/touch? We have to take a leap of faith that the information the concious is recieving is an accurate translation of what our senses percieve and as we all know, many chemicals we ingest and the brain creates itself can give wildly inaccurate results so we halluciante, dont feel cold/heat, have the sensation of moving when we are not etc etc. Science is simply working on the assumption that we cant implicitly trust what our senses tell us which is <i>not</i> an unreasonable presumption to make. When we discard this as unhelpful we are moving from reality towards mental imbalance.