I agree that this is an important factor. I also agree with your analysis. I also think the chronology of this trial reduces the burden on the d.m.c and nwbo regarding p.f.s v. o.s. endpoints.
There seems 2b a guiding hand.
P.S. You brought to mind that gifted actor from England. When he used the word "Guinea Pig" to describe his situation..... I knew nwbo had more to contribute than a cancer breakthrough. I think this trial will b seen by future historians as step toward the end of placebo trials.