In the immortal words of Gary Coleman, "Whatchoo talkin' 'bout, Willis?". Stan says it at 4:20 in this video. He says "2x1" maybe 20 times in this one video so it seems kind of important. I think he says "2x1" in probably every video he has ever made. Second place would have to be "over cut alignment."There are no mystery perceptions. I haven't seen anyone claiming that a 2:1 ratio is why cte works.