David Allen in his newsletter doesn't specify that this is what he's talking about. I searched on the Internet and found many systems that were called ABC prioritization; no one of them seemed clearly the most prominent. The arguments in his newsletter don't seem to be directed against that particular system (e.g., having to re-write the items onto the next day's list if they're not done) but against the idea of recording priorities at all.
Originally Posted by mcogilvie
Inability is an abstract thing involving comparison with alternate universes; it cannot be experienced.