Dronak: First, what a non-dancer does is irrelevant. Who cares if they do it wrong, they're not dancing and that's what we're discussing.
In this instance we were answering a question from someone "trying to learn the dances", a non-dancer perhaps, who wanted to know what CBMP is.
Dronak: I'm not sure what would happen if you tried to put the wrong side fwd like that while dancing with a partner
It's only the wrong side fwd if the step is intended to be in CBMP. Otherwise the partner should match the side lead. I don't think the example of stepping in CBMP from a square position occurs anywhere, and I would contend that it cannot without the additional use of CBM. The point I was trying to make is that placing one foot in line with the other is not sufficient to produce CBMP. If the opposite side moves towards the moving foot then CBM has also been applied. I cannot think of an instance where a step is made in CBMP (no CBM) without the opposite side _already_ being forward (or backward). Can anyone else?
Dronak: OK, a total beginner may not get it right away. But he/she will be taught how to do it correctly from the start since it's a basic technique.
Oh If only!

I'm afraid there are many places around here where any mention of CBMP is left pretty late. Usually after most beginners have left in the belief that they now know enough to get themselves around the floor.
Dronak: the actual phrase was "pretty naturally". I specifically avoided saying "naturally" alone to imply that there's a chance it won't be completely natural for everyone, all of the time.
Sorry, my oversimplification.