h/t to Prof. Berman TG.
The title of this post is the headline of this new New York Times segment of its series "Room for Debate." The NY Timesbrought together five leading lights to comment on this question (all of whom appear to supply variations on the answer "Yes"). Here is how the segment sets up the debate, followed by links to the must-read pieces that provide five different answers to the question:
A U.S. district judge in Denver recently rejected a plea bargain in a child pornography case because the defendant had agreed to waive his right to appeal. The judge said such a deal would undermine the purpose of appellate courts. (He later accepted a plea bargain without that stipulation.)