Delusion: The reason there are vastly more male mathematicians, scientists, engineers, etc. is because women have been somehow systematically kept from entering those fields.

Reality: This line of thinking may hold water in other fields, but men are empirically better at linear, analytical, scientifically-driven thinking, and although some women can achieve competency, there will NEVER EVER EVER be as many female math geniuses. Ever.

2.

Delusion: That they themselves will not soon grow old, ugly, unfuckable, and essentially worthless to men. They might not believe this in the sense that they would openly profess it, but all of them secretly cling to the false hope that they can be just like men: sexually attractive (in fact, even MORE SO) as they age into their 30s, 40s, etc. Without this delusion, they would all be crippled by constant anxiety and depression.

Reality: After about 25 or so, women immediately begin a steady and rapid decline in physical appearance across the board. Their faces crinkle, their bodies become less supple and tight, and their fertility plummets. The McKaylas of the world will always replace the Demi Moores. Always.

3.

Delusion: they can achieve SITC-style sexual "empowerment" by fucking lots of dudes and remain just as marriageable as a girl who has only had sex with a couple of guys, because, hey, MEN FUCK LOTS OF WOMEN AND IT'S NBD SO CLEARLY WE DESERVE THE SAME SOCIALLY NORMATIVE "RIGHTS"!