In modern science, even the congenitally blind can understand optics and even the congenitally deaf can understand acoustics—nothing is more characteristic of modern science than those peculiar facts. Whether you see something, hear it, or perceive it in any other way, what you’re perceiving is the same. In modern science, optics isn’t about the subjective experience of light, which is introspectable (unless you’ve been blind since birth, presumably), and acoustics isn’t about the subjective experience of sound, which is also introspectable (unless you’ve been deaf since birth). Instead, modern optics is the objective study of the physical phenomenon of light, which needn’t be seen to be understood, and modern acoustics is the objective study of the physical phenomenon of sound, which needn’t be heard to be understood.
Interestingly, that makes modern science not only physicalist but also universalist-inclusive. Traditionally, optics excluded the congenitally blind (for they were blind to the subject matter) and acoustics the congenitally deaf. Modern science excludes nobody.
Modern science is also universalist-inclusive in that it insists on its propositions being at least in principle possible for anybody to interpret and figure out whether true. For example, the pickup community on the Internet teaches the theory and practice of game. The most that the mainstream is able to admit, however reluctantly, is that what the pickup community teaches makes perverse sense. That is, what it teaches works in practice (the practice, the mainstream would make sure to point out, being hedonistic, manipulative, and immoral). What the mainstream would not admit is that what the pickup community teaches is scientific, that the theoretical system (about male and female sexual psychology and how seduction works between men and women), whether or not it works in practice, is “true” in the modern-scientific sense of that term.
Why? Because modern science is universalist-inclusive, and the pickup community, which is almost exclusively made up of young heterosexual men, didn’t come up with its insights in a universalist-inclusive way. Just as the congenitally blind must be able to understand optics—that’s one of the promises of physicalism—the homosexual must be able understand the science of how heterosexual men and women attract each other.
Studies are almost useless for understanding how seduction works between men and women, but at least they’re universalist-inclusive. They’re set up such that anybody, whether heterosexual or homosexual, sexually experienced or inexperienced, can at least in principle interpret the propositions and figure out whether they’re true.