>Interestingly, when the clocks are synchronized, the common oscillation frequency decreases, i.e. the clocks become slow and inaccurate. From the abstract of

>Interestingly, when the clocks are synchronized, the common oscillation frequency decreases, i.e. the clocks become slow and inaccurate. From the abstract of the referenced paper. Apparently the effort required to keep the clocks synchronized slows them both down, and they collectively keep worse time.