We fired the guy, the hiker on the spot, naturally.

The hiker with him last night, he Was four hours overdue getting back.

no. no, nothing's wrong. i was just looking at that, uh, that hitch hiker.

Whereas on this path was on a very sunny day, and so even though the hiker couldn't see farther than a few feet in front of him, he could see shadows and say,

So we take a hiker, we put him at a start location, say here, and we blindfold him so that he can't see anything in the horizon, but just has enough to see his or her feet so that they won't stumble over something, and tell them execute the plan of going forward.