(self) introspection is also hard. An end user may not even consciously know they have a filter, nor the relative weight of that filter (people are often analo

(self) introspection is also hard. An end user may not even consciously know they have a filter, nor the relative weight of that filter (people are often analog, outside of extreme subjects). The site might not even capture a variable that's important. E.G. it isn't mandatory to answer if someone enjoys kelp basket weaving; which might be someone's favorite hobby. However that's extremely niche and people in the data set would probably outright skip over that question entirely as well as related questions that might composite towards a value in that field. Or maybe it's like gardening but there's so much ambiguity about the scale and seriousness that asking a question doesn't provide good results outside of an interactive conversation.