[But there is actually a very palpable pause because Fukuda has to stare at his phone for a long time. Like he's only talked to Cain over text so he doesn't technically KNOW he's an adult but surely a child wouldn't be brought to hell or expected to help fight the moon?? What age would someone have to be to learn what an equation is? Obviously these particular equations wouldn't be familiar until higher grades, but surely primary school is when children first learn the word.
But then Cain is from some sort of wizard world where they don't have modern technology, for the most part. Is it possible that magic based technology completely precluded the need for the development of the sciences? But surely even the most basic of mathematics is completely unavoidable in a civilized society. He's both horrified and fascinated by the implications of a world that developed without a formalized study of mathematics and physics, or rather with one with a fundamentally different theoretical backbone.
That said, Cain didn't question the word "mathematics" so it must exist on some level. This leads to another possibility which is that Cain is incredibly stupid.]
An equation is like a mathematical sentence, where you have two values set equal to each other. An incredibly simple example would be 2 + 1 = 3
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But then Cain is from some sort of wizard world where they don't have modern technology, for the most part. Is it possible that magic based technology completely precluded the need for the development of the sciences? But surely even the most basic of mathematics is completely unavoidable in a civilized society. He's both horrified and fascinated by the implications of a world that developed without a formalized study of mathematics and physics, or rather with one with a fundamentally different theoretical backbone.
That said, Cain didn't question the word "mathematics" so it must exist on some level. This leads to another possibility which is that Cain is incredibly stupid.]
An equation is like a mathematical sentence, where you have two values set equal to each other. An incredibly simple example would be 2 + 1 = 3