tell that to Dr Kristin Lippincott, I was just quoting her! She was not joking either!

FWIW I have heard about GPS satellites using cesium and rubidium clocks to keep time in the contest of the leap second, now why would that be? see the Wiki: Atomic clocks & picture labelled Chip-scale atomic clocks, such as this one unveiled in 2004, are expected to greatly improve GPS location.

As an aside the New Scientist did report that there are moves afoot to separate sidereal time from that which the scientific community needs to express data & theories etc.
Because clocks are so accurate, and technology relies on ever smaller margins (eg microwave data conduits returning to be faster than fiber-optics in money trading! think micro-seconds!)