“If the forest were covered with ten times the number of blue markers I had seen on my hike, the probability of my getting lost would certainly be reduced. One could imagine the markers organized in a more symbolic shape—say a real arrow, instead of a cryptic linear marker. And if we wish to go that far, why not just paint the more explicit text, "This way," on the rocks in 100-point Helvetica so there's no ambiguity whatsoever? Yet at some point, with the successive addition of more sophisticated elements, the true value of the untainted forest suddenly vanishes.”