(WASHINGTON POST) — Google’s motto is “Don’t be evil.” But what would it mean for democracy if it was?

That’s the question psychologist Robert Epstein has been asking in a series of experiments testing the impact of a fictitious search engine — he called it “Kadoodle” — that manipulated search rankings, giving an edge to a favored political candidate by pushing up flattering links and pushing down unflattering ones.

Not only could Kadoodle sway the outcome of close elections, he says, it could do so in a way most voters would never notice.

Note: Read our discussion guidelines before commenting.