I'm curious if Ballroom/partner dancers actually understand "why" the dances are the way they are? Having done this stuff for decades, I'm quite clear that a big issue is blindly doing technique that is oftentimes propagated without critical analysis (or with bad/sham analysis). I'm certain that if partner dancers were taught "why" they have to dance in certain ways, their "bad" habits would change pretty quickly. There are very basic functional reasons why partner dancing work in certain ways, and there are many contrived (suboptimal) technique people teach because of blind regurgitation or poor understanding of the nature of partner dancing. As specifically for prior Ballet/Jazz/Tap/etc. experience, in many cases the problem is that instructors don't understand what it takes to "convert" a dancer with prior/related/relevant experience to a Ballroom/partner dancer, but only know the canned method of teaching non-dancers. The ability for classically trained dancers to hold "up" their bodies and get on their alignment axis (and turn/spin without dizziness) gives them a huge advantage over non-dancers. I did a few years of adult Ballet/Jazz/Tap/etc. when starting Ballroom and it was several years before I understood many of the classical techniques that apply to partner dancing. Anyone want to take a stab on "why" some of the dance technique quoted above are the way they are (more or less)? I have plenty of opinions on this issue, but will defer expressing them for the time being.