That's what they thought at the time. It's impossible for me to say.
There have been times when what science thought was incontrovertible proved not to be so. The earth is flat. There were sea monsters that swallowed ships, etc. While what Tam said wasn't right, she did correct herself. I put this down to being accepting of change and modifying the message based on new information.
Might be a good idea to wait until the "science" has gotten through "evolving" and changing and modifying before rushing off into some ill considered medical concoction. Grave yards have a substantial number of medical oops in them. Those of us that didn't spend our lives saying ''yes sir captain'' aren't as prone to accept government edicts.
