© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2021
N. GiansiracusaHow Algorithms Create and Prevent Fake Newshttps://doi.org/10.1007/978-1-4842-7155-1_5

5. Prevarication and the Polygraph

Can Computers Detect Lies?
Noah Giansiracusa1  
Acton, MA, USA

There is no lie detector, neither man nor machine.

—US House of Representatives Committee Report

Wouldn’t it be nice if we could take a video clip of someone talking and apply AI to determine whether or not they’re telling the truth? Such a tool would have myriad applications, including helping in the fight against fake news: a dissembling politician giving a dishonest speech would immediately be outed, as would a conspiracy theorist knowingly posting lies on ...

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