if I may invoke a caveat; please keep in mind your sources. a 'click' on the Sura 1995 link actually brought us to Kristl Smith's (a business analyst, with no biology background that I can determine from her resume) opinions on this topic, from whom you quote. I am not disregarding her opinions at all. She appears to be well read on the subject, but she is no authority on the subject by any means, and the implication of your reference is an appeal to authority. 'nuff said.