Originally Posted by Red Brooklyn
As I recall, the doctor comments on Bruce's fear of death. He says he isn't afraid of death, and the doctor tells him that's why he fails.
The rope eliminates the fear of death. If you don't make the jump, you know you're going to be fine.
Ah, I see how I was getting that twisted. To my mind, you want the safety rope because you're afraid to die. The rope means you won't. Going sans rope to me means you accept the consequences of failure -- it's a brave, less-fearful thing to me.
At any rate, I don't know what that lesson imparts to Bruce or to the film.