Researchers Built an "Online Lie Detector." Honestly, That Could Be a Problem

The internet is full of lies. That maxim has become an operating assumption for any remotely skeptical person interacting anywhere online, from Facebook and Twitter to phishing-plagued inboxes to spammy comment sections to online dating and disinformation-plagued media. Now one group of researchers has suggested the first hint of a solution: an "online polygraph" that uses machine learning to detect deception from text alone.

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