Thank you sincerely, Poul, for your citation, and I have many others to thank for their assistance in my work. Firstly, thanks to you and all my students, both graduate and undergraduate, at the University of Western Ontario and Colorado School of Mines for their tolerance of, and interest in a sometimes overly enthusiastic espousal of my controversial ideas. I have learned more from their ensuing studies than I could then have thought possible. I am immensely proud of that result; it is a teacher’s highest award.

Secondly, I have been hugely fortunate in supportive and knowledgeable instructors, colleagues and...

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