If you’re talking about what I think you’re talking about, then by “risk”, you mean “frequentist probability distribution over outcomes”, and by “ignorance”, you mean “Bayesian probability distribution over what the correct frequentist probability distribution over outcomes is”, which is not the way Luke was defining the terms.
If you’re talking about what I think you’re talking about, then by “risk”, you mean “frequentist probability distribution over outcomes”, and by “ignorance”, you mean “Bayesian probability distribution over what the correct frequentist probability distribution over outcomes is”, which is not the way Luke was defining the terms.