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Why not extend the time period for consideration back the last millenium or the last few millenniums? For instance, DaVinci knew of heart disease some 500-years ago, but guess what? The Catholic Church poo-pooed it just like much of his other investigations of the body.You want to tell me what in this century has convinced you otherwise?
That's not my point at all, though. For civilization on Earth to pretend that our civilization has developed in the same way that any extraterrestrial civilization has developed is naive. Humanity, people, in general, tends to project their worst traits on anyone and anything, e.g., your neighbor, the people on the other side of the tracks, as yet unknown extraterrestrial civilizations, and on, and on.
Much of humanity seems to think it knows everything as if humanity, itself, is some sort of god-like civilization. While that may be the case on Earth with the fact that there are enough nuclear weapons on this planet to ensure nuclear winter if they were used, with the vast size of the universe and the increasingly vast number of extra-solar planets thought to be capable of hosting life as humanity knows it, it is statistically unlikely that every advanced civilization would develop in exactly the same way. As I see it, its humanity's over-inflated ego that leads humanity to think that all other advanced civilizations in the universe would progress in exactly the same way as civilization has here on Earth.
Just imagine if the Catholic Church had not poo-pooed DaVinci's exploration of the human body. How much more advanced would medical science be now if the Catholic Church had not done that?? I certainly cannot, and do not think anyone can say; however, I think it is well within reason to speculate that it would be far farther along than it is now.
These are speculative examples of two paths in only our civilization that likely would have lead to vastly different outcomes had the other been the course - just as likely as other advanced civilizations progressing along vastly different paths than ours.