What would happen, if the same sequence of bids come twice, but shifted by 2 seats. The first time you find out that it is 5 and the second time you dont ask expecting 5, but it is actually usually 5. Maybe during the 1st time the word always is mentioned several times. So you make the wrong assumption when you declare. You ask opponents what is going on, they shrug and say you should ask the meaning of the bid, you oppose and say you heard it once before, they shrug again so we have different styles.