I don’t think you understand there’s a difference between scientific claims and a normal claim. You don’t need to provide empirical evidence to make a normal claim on a social media site that limits characters.
One can rationally assume that a person who has taught classes on Nazi could provide additional sources if asked. Since we can’t ask him questions or haven’t bothered to, at most you could claim hearsay. However, it’s not outside reason to make that claim within the context that social media allows you to respond to rebuttals.
I don’t think you understand there’s a difference between scientific claims and a normal claim. You don’t need to provide empirical evidence to make a normal claim on a social media site that limits characters.
One can rationally assume that a person who has taught classes on Nazi could provide additional sources if asked. Since we can’t ask him questions or haven’t bothered to, at most you could claim hearsay. However, it’s not outside reason to make that claim within the context that social media allows you to respond to rebuttals.