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Why lying is a milestone for toddlers but a slippery slope for you.

High-stakes lies have all sorts of consequences: perjurers are imprisoned and slanderers are sued. But when your co-worker asks your opinion on his new haircut, a little lie feels obligatory. You lie much more than you鈥檙e probably aware of - is that a bad thing?

Dessa finds out why lying can be a dangerous habit. She discovers whether polygraph machines really work, and why a professor of psychology rejoiced when his three-year-old son fibbed on a hidden camera.

Deeply Human is about why you do what you do. It really is!