Earlier quoted context omitted.
I don't understand why people care so much whether preferences are biological or cultural. Basically because if it is cultural, it may be a form of brainwashing and the expressed preference may actually be something they loathe, but don't feel empowered to reject. Whether or not you think this matters for purposes of making policy, it matters a whole lot for purposes of an individual figuring out how to create a good…
"the expressed preference may actually be something they loathe, but don't feel empowered to reject" But we can ask them, right? We can ask e.g. nurses and computer programmers whether or not they loathe the choice of their profession. If there is e.g. relatively more computer programmers loathing it than nurses then you have an evidence of culturally pushed preference (towards computer programming, in this case), re…
For example, if you ask a women in a very poor rural region of India whether she wants to become an engineer, she might value the possibility far less than she would if that career choice was a realistic, valuable option for her in her current situation. Other typical examples would be slaves who prefer to remain slaves because they are not in a position to really imagine life as a free man, women who state that they prefer to wear a Burka, because they have been raised that way, or a peasant in feudal times who would only have very modest aspirations because he could not possibly imagine living the life of a nobleman whose higher rights were given by God.
More generally speaking, the underlying problem is that the so-called "preference satisfaction view" is false.[2: p. 4] That's the idea of classical welfare economics that people prefer what's best for them. As Broome puts it, nobody really believes it, but it forms the basis of many arguments and theorizing.
So you cannot just ask, although surveys can be used as (potentially fallible) indicators.
[1] https://www.iep.utm.edu/sen-cap/#SH1b [2] https://www.cambridge.org/core/books/ethics-out-of-economics...