so i remember when i was like 10 my neighbors had one of these as a board game, and we asked it a question, and the arrow started moving to spell something out, and it was the creepiest stuff i had ever seen. needless to say we slammed the board closed and they sold it not to long later. i searched on google for about 30 minutes and found no reason as to why these actually work or what the catch is. anyone had experiences with these themselves? my friend and i claim we are bringing one in for our finals in math so we can find out our polynomials and hyperbolas. anyways. comments?