Suppose you like fountain pens, and you recommend certain ones. One of your friend looks for fountain pens that their friends recommend and finds the ones you like.
That is just one example of things that don't require explicit questions.
Another one might be you have searched for books or other things and then they follow the same "path". So long as you have similar interests it might work.
People haven't solved this issue, but there is a lot of research out there on networks of connections potentially replacing certain kinds of search.
Suppose you like fountain pens, and you recommend certain ones. One of your friend looks for fountain pens that their friends recommend and finds the ones you like.
That is just one example of things that don't require explicit questions.
Another one might be you have searched for books or other things and then they follow the same "path". So long as you have similar interests it might work.
People haven't solved this issue, but there is a lot of research out there on networks of connections potentially replacing certain kinds of search.