I would have said that it was much easier to teach wrong, than right, given the rubbish written on this forum by posters who seem to have verbal diarrhoea, but the difference between 1 a 2 and QQS is elementary. Only a complete beginner wouldn't know, and only then for a couple of weeks.
BTW, why does everyone dance the samba bounce action exactly opposite (up, not down, and down, not up) compared with the very careful and detailed explanation given by Laird? No one has ever told me that one. Go on: make my day.