All good questions. This is why you’re a doctor, and I’m someone who thought plane geometry was a person with a strange kind of identity crisis who dressed plainly and was named Jane. That being said. First we need to define what constitutes a room. Does it need walls at all? Can an open-sided event-tent be considered a room? Does the dance take place in Brobdingnab or at a convention of dwarves? If it takes place in a lamasery does meditating about dancing only create the idea reality of dancing ? I assume all “dirty dancing,” no matter the speed doesn't necessarily violate the restriction. The triangle idea is diabolical. Well played, Dr. Peterson, well played. Celtic step dancing stomps viruses to death, so it doesn’t count.