Thank you..I really enjoyed listening to Dr. Cowan. I am anti-vax and use alternative healing so I was never a sold out proponent of the germ theory but this is the first person that gave a valid explanation of what alternative, plausible agents of transmission could be. I have to say the only thing he got wrong was calling a major scale an octave, which is an interval that defines the parameters of the major scale. Since I use several vibrational healing therapies this all seemed a very likely explanation of the transmission issue with diseases. Very interesting video. I am interested in his book.