First is that there can be much factual truth hidden behind them. E.g. if “everything I’ve learned thus far makes me think government regulations fail”, then we can talk about past regulations and whether they really “failed”.
Second, even if we have black-box Bayesian priors with no debatable structure, we can do with them what priors are meant to be used for: predictions, bets. Does that count as a form of debate?
About the high level generators of disagreement.
First is that there can be much factual truth hidden behind them. E.g. if “everything I’ve learned thus far makes me think government regulations fail”, then we can talk about past regulations and whether they really “failed”.
Second, even if we have black-box Bayesian priors with no debatable structure, we can do with them what priors are meant to be used for: predictions, bets. Does that count as a form of debate?