What I mean by this, if you observe mankind, I think the greatest leap away from the natural world is the one we took when we began agriculture. - I would argue that since then the fate of humanity has been much more self-directed than necessarily one of natural selection. - I bring this up because I think Dr. Turell's implicit argument for a creator lies in the fact that Homo sapiens took a leap at some point in the past, one that seems to have been so rapid that it defies the concept of phylogenetic continuity. (Probably also Adler's implicit argument.) - Of course I don't think rapid development necessitates invoking a creator (punctuated equilibrium is much older than I am) but I think its possible that the intelligence David seeks could very well be man himself. The innovation of agriculture is the technological foundation up which, no one could read these words I type. Removing man from the "circle of life" as it were, destroys a plethora of worries that we would otherwise suffer from. - While technology (and implicitly a propositional language) is the root of what makes humans different, lets not forget that the properties of what allows us to make any technology can be boiled down to three mental properties: Planning, creativity, and decision making. They are interrelated, and I think that this interrelation helps us by pointing us to the relevant mental processes.