So one thing I disagree with is the idea that standards in looks alone drive differences in how easy or hard it is to attain casual sex. I believe it's because of the different ways men and women are sexually stimulated meaning when one begins to think sexual thoughts about a potential mate.

Men are almost exclusively visually stimulated. This means the looks of a woman procures a man to imagine her sexually and doing things with her in his imagination. This often happens from a digital photo or video, or well before a woman even speaks. One example I thought of is this woman , a cantonese model. She wears a tight dress exposing all of her back, showing off her bosom and shapely figure , and walks in heels. These types of images and video alone stimulate male viewers sexually.

Women on the other hand, have a much more complex stimulation pattern. They for example, despise penis pictures and often call pictures of men showing off their big muscles for "gay men". Thus, this means a man cannot simply look good, he needs to interact with a woman in specific ways to make her feel certain emotions in order to stimulate her mind in a sensual manner. This is similar to way erotica novels are so popular and written for women. Women are much more stimulated via words and emotions than with visual stimuli.