It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.
— the fictional Sherlock Holmes, in the “Scandal of Bohemia”.
It is amazing how many people these days throw out opinions indiscriminately without having the necessary data to back them up. And when they do show “evidence” to prove their point, those evidence usually are so ambiguious that it really tells you nothing… unless of course, one has already decided, a piori, what one wants to believe.