[coldtea]

>Really we can think that desire is predictable and measurable?

We don't have to think of it philosophically.

If researchers can train some ML algorithm to predict it, then it is predictable, end of story.

If not, it's open (it could still be predictable and they couldn't come with the right algorithm, or it could just be too fuzzy, or even impossible to measure).

That said, if we drop it from "love" to simple "desire", then most of it should be fairly predictable and measurable with very small margin of error.

Humans are not that much of unique snowflakes as they say. In a given culture, the majority of the population will converge a lot in what they find attractive and what they don't -- this has been studied before.