
Originally Posted by
Cleretic
Here's the easy way to swallow it: Short term versus long term. In this case, REALLY REALLY LONG term.
Valigarmanda's fires have been going for about eighty years, which is long for a fire. Sin Eaters have been going for about a hundred, and those two voidsent have actually only been doing that particular thing for like, ten minutes when we met them. (On top of that, I actually suspect both Sin Eaters and voidsent are more suffering from deficiencies rather than lacks, since they are made of aether, just extremely overwhelming amounts of one type of it; they're a magical version of malnourished, rather than a magical version of starving.)
Two of those are exceptionally long, long enough for it to be noticed as an unusual trait, but it's not, like... cosmically eternal, or necessarily actually understood to be infinite; we just know the fires have never gone out, that doesn't mean they won't eventually. Meanwhile, the Ea are thinking from a perspective of billions of years, they're scared of the heat death of the universe. They're working on such an existentially enormous scale that the notion that Valigarmanda's fires have lasted most of a century just feels like small potatoes.