> instead we are briefly led to believe that it was powered by a wind-up mechanism It is - it's just that it can be wound by the change in atmospheric pressure

> instead we are briefly led to believe that it was powered by a wind-up mechanism It is - it's just that it can be wound by the change in atmospheric pressure raising the weight rather than by human interaction. See https://www.portablepress.com/blog/2017/06/still-going/ https://www.portablepress.com/blog/2017/06/still-going/ for a better description including "Arthur Beverly is the only person who ever wound the clock, and he only wound it once."