My brother and I were watching this infomercial about this robot that cleans your house and this conversation came up. Apparently it comes with these two sensors to stop it from leaving the room its in. I was thinking that if you had two it would make a invisible fence. So emphazing that it came with two seem stupid since I thought it needed two to work. Then my brother says something that didn't make any sence, but hey, that's Scott.
