One that bothers me is "fake" precision when a writer has converted some units and not considered the original precision - and on the internet this is just the

One that bothers me is "fake" precision when a writer has converted some units and not considered the original precision - and on the internet this is just the start of a broken-telephone game. E.g some article about power generation starts with "12 Gigajoules" (probably +/- .1GJ) then is converted to "3.33 MWh", inevitably, this is either converted back a suspiciously accurate value of "11.8 Gigajoules" or someone doesn't understand the difference between MWh and MW and butchers it even and we get some completely ficticious value