Is There a Difference Between Negation and Evidentiality?

There's something slightly spooky about negation just like there is about the future. It wouldn't surprise me if evidentiality or maybe even a negative marker took the same slot as an evidential marker that would be interesting. Different languages definitely take these differently. There are one language that has four evidentials and they're all obliterated in a negative statement huh oh Interesting so that they just disappear right negation on its own its own thing.