I don't think that Ridley Scott meant his film to be socially critical, but I think that Gladiator does have an interesting, if perhaps unintended, critical layer beneath the epic. (dvdtalk.com)
«People.ai provides a critical layer of intelligence for our team. (people.ai)
This reaction removes the metallic iron and results in making more reduced iron in the critical layer. (sciencedaily.com)