At the risk of beating a dead horse, I feel that Mr. Ralston did make one serious(from a survival point of view) goof.  He didn't "file a flight plan."  I say this from the point of view of a caver.  While caving and mountain climbing aren't the same, caving does have its share of inherent risks; some of them with deadly consequences.  I was a caver for a long time: rec, survey and teaching.  It was always stressed to me and I stressed it to my students -- "file a plan."  I would always explain that if you don't, you put your loved ones in very hard situation: trying to decide if your late return is intentional or not.
If you want to be in communicado for a while, fine -- file a plan.  I am certainly *not* saying that you can't have impromptu activities.  And I certainly don't want to second guess Mr. Ralston's thinking.  I'm sure he weighed all the pros and cons before his trek.  I'm just not sure *I* would have left out the "file a plan" step.
Just my two cents.
Torus.