The Actuary and IBNR [Discussion]

This will not be a very spicy review. I have been unable to find the one mandatory flaw which, despite all succeeding praise, puts the logical flow of the paper in question. To the contrary, I find the authors' suggested treatment of Incurred But Not Reported Losses altogether congenial. So much so that I shall simply give four varyingly garrulous comments and pose one question. Hopefully, they will serve to amplify the authors' position, not just expose my own prejudices. Reinsurance, Loss Adjustment Expenses, Loss Development, IBNR