The political views of young men have remained stable while young women have shifted significantly leftward. This divergence could be because women are more prone to mimetic (copycat) behavior, adopting the views of their social circles, creating a nationwide 'lunch table' effect of ideological clustering.

People are far more willing to lie to someone in a vulnerable state. In a study, only 3% would lie to an underperforming employee, but that number jumped to nearly 20% if the employee's father had just been hospitalized.

Just as women use 'slut shaming' to collectively police the 'price' of sex and discourage undercutting, men use 'simp shaming' to police the price of commitment. Both are social enforcement mechanisms to maintain bargaining power in the sexual marketplace by shaming those who give away a valuable resource too cheaply.

When asked to imagine incestuous acts, women's disgust is uniformly high. Men's responses show a much wider variance. This reflects the catastrophic evolutionary cost of a single bad reproductive choice for a female (nine months of gestation) versus the far lower opportunity cost for a male.

A poll revealed that women find a male partner's unwillingness to protect them to be a bigger turn-off than if he had a one-night stand. This highlights the deep-seated evolutionary importance of protection in female mate choice, potentially outweighing even sexual fidelity.

Contrary to the "get it out of your system" theory, a higher number of past sexual partners is a strong predictor of future relationship instability. For both men and women, it correlates with higher rates of divorce, cheating, and lower satisfaction in long-term relationships.

Recent Gallup data reveals the growing ideological divide between the sexes is one-sided. Since 1999, young men's political self-identification has remained almost perfectly static. In contrast, young women have become significantly more liberal, creating a gap that has nearly doubled.

Men often fail to understand women's reluctance towards sex because they view it like pizza—even when it's bad, it's still pretty good. For women, however, bad sex is costly and worse than no sex at all. This fundamental difference in risk assessment fuels misunderstanding.

In historical patrilocal societies where women lived away from kin, they needed to build trust with other women. Expressing a shared dislike for men served as a "girl's girl" signal, fostering alliances and loyalty. Research shows women who are "guy's girls" are less trusted by other women.