I heard an intersting theory recently, one that makes some sense. Tango is very much a walking dance and, in theory, you could go an entire night just doing tango walks. If that's so, why do so many people have trouble with tango and claim it so difficult? In theory, if you can walk, you can tango, but I've seen some pretty bad tangos from people who are quite graceful in other forms of dance. What is it that is so difficult or perceived to be so difficult about our beloved tango?