different people have different intuitive priors, and process arguments (mostly) as a kind of Bayesian evidence that updates those priors, rather than modifying the priors (i.e. intuitions) directly.
I’m not sure I understand this distinction as-written. How is a Bayesian agent supposed to modify priors except by updating on the basis of evidence?
How is a Bayesian agent supposed to modify priors except by updating on the basis of evidence?
They’re not! But humans aren’t ideal Bayesians, and it’s entirely possible for them to update in a way that does change their priors (encoded by intuitions) moving forward. In particular, the difference between having updated one’s intuitive prior, and keeping the intuitive prior around but also keeping track of a different, consciously held posterior, is that the former is vastly less likely to “de-update”, because the evidence that went into the update isn’t kept around in a form that subjects it to (potential) refutation.
(IIRC, E.T. Jaynes talks about this distinction in Chapter 18 of Probability Theory: The Logic of Science, and he models it by introducing something he calls an A_p distribution. His exposition of this idea is uncharacteristically unclear, and his A_p distribution looks basically like a beta distribution with specific values for α and β, but it does seem to capture the distinction I see between “intuitive” updating versus “conscious” updating.)
I’m not sure I understand this distinction as-written. How is a Bayesian agent supposed to modify priors except by updating on the basis of evidence?
They’re not! But humans aren’t ideal Bayesians, and it’s entirely possible for them to update in a way that does change their priors (encoded by intuitions) moving forward. In particular, the difference between having updated one’s intuitive prior, and keeping the intuitive prior around but also keeping track of a different, consciously held posterior, is that the former is vastly less likely to “de-update”, because the evidence that went into the update isn’t kept around in a form that subjects it to (potential) refutation.
(IIRC, E.T. Jaynes talks about this distinction in Chapter 18 of Probability Theory: The Logic of Science, and he models it by introducing something he calls an A_p distribution. His exposition of this idea is uncharacteristically unclear, and his A_p distribution looks basically like a beta distribution with specific values for α and β, but it does seem to capture the distinction I see between “intuitive” updating versus “conscious” updating.)