You should catch up with modern cognition research rather than this 20th-Century, anthropocentric nonsense.
Edit: because what is compelling isn't an article here and a study there. It's a slowly-growing consensus among researchers. It would take over an hour for me to compile enough evidence to convince someone "this is real". If you care, you have to do it yourself. My time is too valuable to do that for someone who is probably unserious. Hell, a two-sentence prompt to a good AI would get you started.