What Is the Difference Between Reporting Speech and Evidentiality?

"Apparently This Matters" is CNN Tech's weekly, offbeat look at stories trending on social media. Today, Jarrett ponders the difference between evidentials and evidentiality. "All language can mark the source of evidence," he says in response to a question about how we should phrase reported speech or everything else. 'If it's a popular thing like that where there's already an English equivalent, I would go with the English'