That’s why it’s a hard problem. The idea would be to get leverage by letting you say “I trust this user’s judgement, including about whose judgement to trust”. Then you use something like (personalized) PageRank / eigenmorality https://scottaaronson.blog/?p=1820 to get useful information despite the circularity of “trusting who to trust about who to trust about …”, and which leverages all the users’s ratings of trust.
That’s why it’s a hard problem. The idea would be to get leverage by letting you say “I trust this user’s judgement, including about whose judgement to trust”. Then you use something like (personalized) PageRank / eigenmorality https://scottaaronson.blog/?p=1820 to get useful information despite the circularity of “trusting who to trust about who to trust about …”, and which leverages all the users’s ratings of trust.