Doc Keaton is a character, isn't he?
I guess that there is a lesson to be learned here, as well as being prepared.
Some of it is luck, as in not getting hurt. Selection is not designed to injure people or to even be unusually hazardous. At the same time, we are looking to grind people down and see what is under the mask that they show everyone else. Every person who completes the course is blistered, tired, and sore, and those who understand that and use it for self-motivation are usually successful. I saw a Marine LT arrive at SFAS who did a swim test back home and immediately went for a long ruck, just a week before SFAS. This is a BAD idea. He got to Camp MacKall with the majority of both feet badly blistered and made it through. Despite doing something stupid, he refused to quit, met the challenges, and was selected.
For those who have not yet been to SFAS, we don't just select everyone who shows up. SFAS is physically, mentally, and emotionally demanding, and the majority of people who show up are not selected, whether they get injured, VW, or fail to meet standards.
It is called Special Forces for a reason. And we try to keep it that way.
TR