I disagree. All humans can be taught to think critically. It's a learned skill. Logic is rather rigorous i.e. just learning a few basic rules and applying them can falsify the bulk of claims made in typical discourse. Everyone can learn to sniff out bullshit without having to become a Descartes.
Maybe that's true, I might've been wrong. But still I don't think that it's that straightforward, human brain and intelligence are things we don't fully understand yet.
