Wait, what? Someone had to invent lies? Lies come pretty straightforwardly with, like, being able to conceive of other creatures having minds. You want this other mind to represent a state of the universe that isn't true, you can manipulate that representation thusly, bam. Lies. Presumably someone had to do it first, but it's the sort of thing that would be easily reinvented.

Cam side-eyes his manual.

Ironically, he thinks it may be lying.