Two Roads? We don' need no steenkin Roads -OR- The only way up is down.

I shall be telling this with a sigh
Somewhere ages and ages hence:
Two roads diverged in a wood, and I—
I took the one less traveled by,
And that has made all the difference." Robert Frost

Among distance runners it's known as hitting the wall.
You've trained to run as far, as fast as you can, you've paced yourself,
carbo-loaded, hydrated, and still, somewhere before the finish line you're
done. Maybe it was an unanticipated slightly uphill grade, maybe it was an increase
in the prevailing wind speed or some discounted exertion during your warm-up routine... whatever the cause you're short of the goal and out of EVERYTHING.
You're actually on the verge of total collapse, but your training keeps your legs moving. Your brain and body are no longer communicating. You are in trouble. Serious trouble. Intervention is necessary. Somebody or something has to MAKE YOU STOP. You are incapable of self-control. That's the whole purpose of the finish line. It's completely arbitrary of course, but psychologically effective.

Among non-runners, the situation, its purpose, affect and effect don't compute. The whole idea of pushing that envelope, that far seems foreign, unnecessary, pointless, not to mention dangerous. The chasm between runners and non-runners cannot be bridged; it can only be tolerated. Processed by both camps as simply a "different strokes" function of human psyche and development.

I am a devout non-runner. Distance is no obstacle. I can walk. It may take me longer to arrive, but I'll get there. For runners, this doesn't compute.

Runners are more prone to being driven by external forces. Non-runners must be forced and will resist being driven.

Like squirrel,grits and gravy, only the pure understand.
Like the old bull and the young bull...

What's the hurry? What's the goal? Where is the finish line? Isn't that the root?
Is there a there there? If the driver doesn't load, the whole system hangs? We all live in yellow sub-routines?