> How do you know that? Can you prove it scientifically? We know it as a point of meta-analysis. If you go read a 30-year-old biology textbook, a lot of what i

> How do you know that? Can you prove it scientifically? We know it as a point of meta-analysis. If you go read a 30-year-old biology textbook, a lot of what it says will have been proven false by now. 30 years before that, the textbook says a lot of other wrong things that were disproven 30 years later. There is no fundamental reason other than hubris to think that the current understanding of the thing is perfect. There is a huge body of evidence that we are inclined to promulgate imperfect understandings of scientific subjects, though. So in the absence of clear, definitive evidence that something is fundamentally different now, the best assumption is to assume that a lot of current "scientific knowledge" is wrong.