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	Podcast:		Saturday Morning
	Episode:		Amit Katwala: the intriguing origins of the polygraph machine
	Category:		Society & Culture
	Duration:		00:28:01
	Publish Date:		2022-05-06 22:10:00
	Description:		The average person hears up to 200 lies a day, according to research conducted by University of Southern California. However we're pretty average at lie detection, and are only able to separate truth from lies 54 percent of the time. The creators of the polygraph hoped a lie detector would make the justice system fairer, but as Amit Katwala describes in his new book Tremors in the Blood: Murder, Obsession and the Birth of the Lie Detector, the flawed device soon grew too powerful for them to control. Amit Katwala is a senior editor at Wired. His previous book is The Athletic Brain: How Neuroscience is Revolutionising Sport and Can Help You Perform Better.
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