Thinking about stuff

Steven Pinker gives a talk about his most recent book The Stuff of Thought: Language as a Window into Human Nature.

From the TED description

In an exclusive preview of his new book, The Stuff of Thought, Steven Pinker looks at language, and the way it expresses the workings of our minds. By analyzing common sentences and words, he shows us how, in what we say and how we say it, we're communicating much more than we realize.