25. While it is theoretically in Doctor Daneeka's power to do something which would ground Yossarian, it is an act made impossible by military bureaucracy. What would Daneeka have to do?
From Quiz What's The Catch?
Answer:
Declare Yossarian insane
The only ways that Yossarian can stop flying missions are if he meets the required number, is declared insane, or dies. He cannot meet the required number because Colonel Cathcart continually raises it throughout the novel, and he is understandably determined not to die - but in order to be declared insane, he would have to ask Doctor Daneeka to screen him for insanity. In doing so, he would show concern for his own well-being which, from the military's perspective, is the sure function of a sane mind, so he would be declared sane by the virtue of fearing for his sanity and safety. If he was actually insane, like McWatt, he would have no issue flying dangerous missions.