I did not know until I saw this headline this morning that Diana Nyad was trying this again, and my first thought was, "How old must she be?"
Yeah. Sixty-four. The first time she tried was in 1978. She's always wanted to complete this swim but for a variety of reasons - jellyfish, weather, sharks - she's never made it. But she refused to give up. So when she said this would be her last attempt, she obviously did not have in mind to jump in the water and make some obligatory effort before declaring, hey, she was just too old and it wasn't meant to be.