The point is that you're blindfolded, and you can't tell which is the red or green unless you ask the men at the feet of the poles. I've seen a much better worded brain teaser with this same theme. Apparently, it's a classic: You are traveling down a road toward [location] and you come to a fork in the road. One man is standing in the middle of each branch. They are the only people who know which way you should go to get to [location]. One man only tells the truth, one man only tells lies. You have to ask the same question to both of them in order to find out which one is honest. Just so you know, there are multiple answers to this question.