A network engineer was shipwrecked on an island with very few supplies. Taking an inventory, he tallied a pocketknife, a granola bar, and a scrap of fiber. He ate part of the granola bar and started looking for some food. Finding nothing, he figured he didn't need the fiber anymore, so he dug a small hole and buried it.
Half an hour later, a backhoe showed up, dug up the fiber, and rescued the network engineer.