I wrote earlier:

Where I've seen people use PDUs in AI or philosophy, they weren't confused, but rather chose to make the assumption of perception-determined utility functions (or even more restrictive assumptions) in order to prove some theorems.

Well, here's a recent SIAI paper that uses perception-determined utility functions, but apparently not in order to prove theorems (since the paper contains no theorems). The author was advised by Peter de Blanc, who two years ago wrote the OP arguing against PDUs. Which makes me confused: does the author (Daniel Dewey) really think that PDUs are a good idea, and does Peter now agree?