And what are 0 and 100 in Celsius but arbitrarily tied to H2O? Salt water and human biology are also physical phenomenon, if slightly more arbitrary. A species based on any other such liquid chemistry (like methane for Titan, etc) would equally be confused on the arbitrary choice of H2O.
And what are 0 and 100 in Celsius but arbitrarily tied to H2O? Salt water and human biology are also physical phenomenon, if slightly more arbitrary. A species based on any other such liquid chemistry (like methane for Titan, etc) would equally be confused on the arbitrary choice of H2O.