In Northrop Frye's essay "Don't You Think It's Time to Start Thinking?" he asserts that "thinking" is only defined by the ability of a person to verbally communicate, or articulate, their ideas, and that what our society generally calls "thinking" is misleading and has put us on the path to a future dystopian world.
Frye first notes that, oftentimes, we use "thinking" to encompass all mental activity, such as "worrying, remembering, daydreaming." He argues that these mental activities do not fit the definition of true thinking, because "ideas do not exist until they have been incorporated into words." This is supported by those occasions where we seem to have a great idea in our heads until we hear it said out loud. It might also explain why talk therapy might be so helpful—it requires us to take our worrying, remembering, and daydreaming and translate them into intelligible verbal communication (or, in other words, to think about them).
Unfortunately for our society, Frye points out the anti-intellectualism epidemic that is so pervasive. We may be able to read and write, sure, but thinking "takes practice." Verbal articulation takes practice, and many young adults can barely assert a fact or idea without self-doubt (to see what I mean, go watch Taylor Mali's slam poem, "Like, totally whatever, you know?"). As a society, we have lost our inclination to practice our thinking; instead, we appeal to the absolute lowest common denominator among us. It is because of this that Frye warns us about the likely future our society is aiming toward—a future of tyranny, a loss of intellect and freedom, and the inability to ever do any real "thinking."