I’ve listened to the first bit.
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It gets better (even more informative) as it goes along. Bret (middle) is extremely good at explaining things & very knowledgeable. The doc on the left is excellent. On the right ... he’s upset/passionate & has funded some studies himself, he’s so concerned enough to put his money where his mouth is & trying to provide the public with accurate info as opposed to the lies - don’t personally like his speaking style, but that doesn’t devalue his info.