Ringer,
I understand what you are saying and I think we mainly agree on the surface. I am saying that the word "wrong" is pretty cut and dry, therefore I do not use it. Unless of course it is theory, concept, misinformation type of thing like old ball flight laws.
Pretty bold to tell someone that what they are doing in their swing is "wrong".
If someone plays to a 30 handicap, is their swing wrong?
If someone plays to a +4, is their swing right? Just sayin...
I'm with you on this completely. Wrong is kind of a bad word but "different" doesn't exactly have the right emphasis either.
How about "Not the most efficient"?