""Ah, I see: anyone with an opinion different from yours is blinkered and has a closed mind.""

Not at all! Just those idiots who are too lazy to even look for the evidence and want me to waste my time doing it for them.

If you have only researched from one point of view, your conclusions are slanted and your opinion invalid.

If, on the other hand, you have done some homework, then you are deliberately choosing to ignore what disagrees with you preconceived notion, which is worse.

My apparent ability to digest the information in TIA's link was in fact an illusion, I'm afraid, since it was one of the many strands of evidence I turned up in my own research into the subject.

I am no professional scientist (an analytical chemist 5 decades ago), but Google is easy to use if you have any interest in the truth.

Don T.