I've played with one. Domokos gave a lecture at Trinity College, Cambridge. Most ways that you place it, it behaves unremarkably, but there's one way of placing

I've played with one. Domokos gave a lecture at Trinity College, Cambridge. Most ways that you place it, it behaves unremarkably, but there's one way of placing it such that it rocks back and forth and has almost settled down to the almost-stable point when it falls over perpendicular and ends up at the single stable point. This is the way to demonstrate it.