“Clearly, many branches of science need an exquisite precision of timekeeping and the infinitesimal decimals of calibration, so space launches, for example, are not scheduled for leap-second dates. But society as a whole neither needs that obsessive time measurement nor is well served by it.”
Source : " The 'leap second' is a timely reminder" by Jay Griffiths, www.theguardian.com. June 29, 2012.