A slight rephrasing of the headline allows us to apply Betteridge's law[1]: "Have we solved the mystery of why a minute is divided into 60 seconds...?"
That's not fair at all. I enjoyed reading about ancient timekeeping and the theories that powered them. I had no idea how they tracked time at night, for example; now I do.
[1] http://en.wikipedia.org/wiki/Betteridge%27s_law_of_headlines