there is a problem with "getting it right" and that is when there are "mixed experienced" (note - not abilities). There is often one man (not always male) who knows the thing backwards, and you can dance Cajun, French, Breton, Irish Set, Latvian, Scandi and even Contra, but you don't know this particular set, even though you have switched languages to the current genre (almost). And there is a language to all these genres. More than a dialect.

Then this knowitall grabs you and pushes.

My point, and I make it to all newbies, is that grab and push is a primeval danger signal and it tends to wipe your short term memory to deal with the danger. So all that focused concentration you were applying is lost. And they can't see that.

Help? They know nothing!

The correct procedure is hand gestures; point, rotate etc.