Really appreciate the pointed commentary on this! Happy to make further prognostications about the success of CGM-input-only APSs via email.

For the record, when I say "Euglycemic Parity" what I really mean is a sort of Turing test (not time in range), where a data-driven Endocrinologist is asked to tell the difference between CGM records from a non-diabetic, and CGM records from a diabetic equipped with some control system. Passing this test should be our long term goal IMO and we will probably have to bring many techniques to bear to eventually achieve it.