The granularity point is interesting; in the US, setting a building’s thermostat to 68 degrees Fahrenheit vs. 66 degrees Fahrenheit is typically considered a pretty non-arbitrary decision as far as saving money vs. gaining comfort goes.
Plenty of Celsius thermostats can be set to within a tenth of degree (not that I know anybody who ever sets the tenths’ digit to anything other than 0 or 5).
Plenty of Celsius thermostats can be set to within a tenth of degree (not that I know anybody who ever sets the tenths’ digit to anything other than 0 or 5).