Some people think Thai women are hottest. Some think Russian women are hottest. Some think Brazilian women are hottest.
Does this really need explaining? If it does: Individuals have different takes on beauty.
Of course. But this doesn't prove what you think it does.
Personally, I find Indian women the hottest, on average. How is science going to tell me that I'm wrong, in my own mind?
We don't know how. But let's not make an argument from personal incredulity.
Is it really impossible in principle that scientists could make a meter that measures precisely how much you like something you look at. So that scientists could tell you that you were wrong/lying when you said one woman looked hotter than another to you?
That is; obviously I'm probably "wrong" in finding Indian women the hottest, based on averages. What btw is the "right" hottest ehnicity? Since science--oh wait, nevermind the sentence, "it hasn't yet".
Well, let's separate two issues.
1) Whether you are right or wrong about claiming you find Indian women hot is potentially objectively testable. It's entirely possible we could invent some kind of brain reading machine that could determine how hot you find someone. We could then say that you were lying if you were in fact lying about how hot you found someone.
2) In terms of hotness itself, as in "Woman A is hotter than woman B", no amount of brain reading would determine this. Even if everyone we tested through woman A was hotter than woman B, that wouldn't really establish any kind of inherent 'hotter than' attribute. And, of course, it's entirely possible that even with the brain reading machine from my hypothetical, some people may find woman A hotter and some woman B hotter. But what does this tell us?
Consider the property "closest to my own height". Some people may find woman A to have this property more and some woman B. That doesn't establish that the property isn't an objective relationship.
Again, at one time in history the only way we could tell something was red was to have someone look at it and say "it seems red to me". And people could disagree over whether something was red or orange, and there was no objective referee. And people who were colorblind could insist that color was all made up and that there was no such real property and our minds just "painted the world" for our own entertainment or conceptual convenience. All of that would not only have been wrong but *absurd*, even before we understood what color really was.