Charlie Charlie Challenge

I can see this challenge on youtube many times on many videos of famous or not famous people.

Many videos have become viral, and this challenge, as many people say, invoke the demon of Charlie Charlie. The challenge is about to put two pencils, one above the other perpendicular on a paper that is divided into four parts (two of YES and two of NO), then, you make questions of YES or NO to the supposed spirit. Personally I think it's very false, and I find it shameful that most of people have won millions of visitors on his videos about this challenge.

Several scientists say that the only fact that makes to move the pencil is the gravity, because it's very difficult that the two pencils are perfectly in balance, or even the most minimum breath can makes to move it.