Originally Posted by
stimpy
My day job has me too busy to answer Q 1 in detail. As for your 2nd question, I already said that there are plenty of threads right here on Flyertalk on this subject. Just click the search button and look around.
I don't really conider flyertalk threads a credible body of scientific work
... just kidding ... I know you didnt mean it that way.
However, I have tried and am unable to find a single credible piece of work that supports the zero-risk thesis.