John Derbyshire gives the following as examples of reality denial:
All but a very tiny proportion of human beings are biologically male (an X and a Y chromosome in the genome) or female (two X chromosomes). A person who is biologically of one sex but believes himself to be of the other is in the grip of a delusion. That is what everybody would have said 50 years ago.
Some of those who said it would have followed up with an expression of disgust; some with unkind mockery; some with sympathy and suggestions for psychiatric counseling. Well-nigh nobody would have said: “Well, if he thinks he’s a gal, then he is a gal.” Yet that is the majority view nowadays. It is a flagrant denial of reality; but if you scoff at it, you place yourself out beyond the borders of acceptable opinion.
It is, of course, the same with race. I still blink in disbelief when I hear or read someone saying, “There is no such thing as race.” It falls on my ears much like “There are no such things as mountains,” or “There is no such thing as water.” Of course there is such a thing as race. Until recently, everyone knew this. As I like to remind people, the founder of the modern biological sciences surely knew it.
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