Indeed, it's bad enough when they mix up units of the same dimension, but ignoring different dimensions is even more stupid (though it has the advantage of bein

Indeed, it's bad enough when they mix up units of the same dimension, but ignoring different dimensions is even more stupid (though it has the advantage of being more easily detectable without even having to check the numbers). In that vein, a common mistake is to mix up multiplication with division, e.g. when they write "terawatt per hour" instead of "terawatt hour" for energy or "kmh" instead of "km/h" for speed.