For those of us that are not "full time" hikers, it would be interesting to see how we'd do on a Whitney or rim to rim type hike WITHOUT training for it. It would be interesting to see how much of a factor the training would have been -- comparing your hike without training to when you'd done it with training.
Would we even be able to accomplish it? And, if we did, how stark would the differences be in time taken, physical status at the end, etc.? It really would be an interesting experiment -- substitute the "normal" challenge of a Whitney day hike by "kicking it up a notch": can you do it with NO training at all?
(Not that I'm about to try that!)