A related gripe of mine is when precision magically appears when conversions occur. 2.2 stone is 14 Kg if you maintain the same precision.<p>I think in part that contributes to the metric system being perceived as complicated.<p>- &quot;Keep heater 3 feet (0.91 meter) away from flammable items&quot;<p>vs.<p>- &quot;Keep heater 3 feet (1 meter) away from flammable items&quot;