It's not as fine point as you may think, there's a lot of opinions out there, just relax and work on breaking things down for a conclusion - like I said, that's how groups of scientists figure stuff out - they keep it calm and look for a logical answer to everything. Much easier to work together that way; I don't remember David Attenborough ever telling anyone to "take a biology class" LMAOYeah that was a little pointed, I apologize. I was just a little taken aback by the comparison between a two inch animal eating a piece of gravel, and a minute amount of chitin, which is present in the exoskeletons of almost all of their prey items. The difference, to me, is so clear-cut that to compare the made my head spin a little, but again, I apologize for putting a bit too fine a point on it
I think this is great thread with a lot of information, so I'd rather not cheat our readers by taking it to PM for the sake of presentation, but I don't want this to look trashy either, and I'm sure the OP doesn't as well. Apology accepted and likewise if you felt offended by anything I said. Please, let us continue then......