Climbers have the rare ability to gamble the rest of their lives on one step.
Joe Simpson, Dark Shadows Falling page 196
Doesn't even need to be a climber, sounds like he was just following the simple trail and maybe stubbed his toe, or placed his foot too close to an unstable edge. It's easy to do that whether ataxic or not from AMS.
I have stubbed my toe on many a trail. There but by the grace....
