Temperature meters on board

[Fanie]

Is there a real use for an in-cabin and outside temperature meter in a cabin, other than when you tell someone what the temperature is to show off or something ? Or maybe that it's cold outside... take a jacket ?

How about if one can have an alarm warning if the temperature suddenly changes... or go below a certain temperature ?

[charmc]

I think it would be in the "nice to have but not too important" category. Water temp is useful for scientific purposes.