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Sokka looked around at the various inventions with delight. He’d leave the magic – and it was magic, no matter how much they protested the term – to Katara and Aang; this was something he could do, given the time and resources.
He wanted to know how they worked, the science behind it all. But the war meant he couldn’t stay to learn everything, and Sokka wouldn’t shirk his duty as a warrior.
But he could learn a few things while they were here, and their host was just as eager to share as Sokka was to learn, so Sokka followed him.