In a sense you are right. During EINDs they stated that anecdotes don’t come off of echmo. Also they touted that the sickest of sickest near death and ventilated came back from death and some after 3 days extenuated by themselves. So to Monday morning quarterback, yes they probably should have just went for critical. But like most drug companies chasing Covid meant to do whatever was best at the time. Maybe protocol when it was drawn up seemed best to include severe also. Don’t forget in the beginning nothing was working. Everyone was going right to ventilation. But as virus progresses, the treatments became better and an understanding of what was working became the norm. So combining better treatments, a slowdown over the summer in cases and then a ramp up during second wave, treatments caught up to the virus. Same thing happened when Cd-10 was initiated. Very poor PE and protocols for trial doomed approval. That is why I feel the Longhaulers trial we should be pros by now. This is bread and butter for Cydy.