yes, it is a way of saying it was a waste of time but he explained how it didn't equate to being 90 minutes closer to death which on first thought would be a logical reasoning. something to do with living past the event and doubling chances of surviving longer than given time ........ or something
You weren't stranded in an island after having crashed landed from flight 815 were you - when you were talking about all that?
Was your friends' name Daniel Faraday by any chance?
P.S You better patent that theory..