Quote Originally Posted by Lusavari View Post
Fahrenheit has such a weird base set.... The original scale items were 0 Degrees is Brine/Salt Water and 98.6 for life. I forget why Fahrenheit wanted it to be 98.6 but it wasn't 100% random, however life varies on it's temperature so it's really not a sound system...
He didn't; he wanted it to be 96. The definition (and later re-definitions) of the Fahrenheit scale is a bit of a mess, with a lot of oral tradition surrounding it. The Wikipedia article has a good summary of the verifiable bits. My favorite explanation not mentioned there—mostly because it has little to back it up—is that he incorrectly assumed that a cow would have the same normal body temperature as a human.

Anyroad, I suspect an Eorzean temperature system would be based on the properties of elementally-aspected shards: critical points might be the effective temperature of a 1:1 ratio of fire and ice aethersand, or the transition temperature above which an ice crystal will spontaneously dissolve into ambient aether.

Of course, that assumes that the linear value "temperature" as we know it is even a meaningful physical quantity in Eorzea: for example, it could be the ratio of "fireness" (heat), "iceness" (cold), and "windiness" (???, associated with rarified climes); properties which taken together will always add up to a constant. (This constant is 100 if you're an alchemist, and some ridiculous figure like 211.9710 if you're using the Eorzean traditional system.)