Why do people believe the Earth is flat?

I have an op-ed in today's Globe and Mail, "Why do people believe the Earth is flat?" wherein I connect the rise of conspiratorial thinking to the rise in actual conspiracies, in which increasingly concentrated industries are able to come up with collective lobbying positions that result in everything from crashing 737s to toxic baby-bottle liners to the opioid epidemic.

In a world where official processes are understood to be corruptible and thus increasingly unreliable, we don't just have a difference in what we believe to be true, but in how we believe we know whether something is true or not. Without an official, neutral, legitimate procedure for rooting out truth -- the rule of law -- we're left just trusting experts who "sound right to us."

Big Tech has a role to play here, but it's not in automated brainwashing through machine learning: rather, it's in the ability for conspiracy peddlers to find people who are ripe for their version of the truth, and in the ability of converts to find one another and create communities that make them resilient against social pressure to abandon their conspiracies.

Fighting conspiracies, then, is ultimately about fighting the corruption that makes them plausible -- not merely correcting the beliefs of people who have come under their sway.

They say that ad-driven companies such as Google and Facebook threw so much R&D at using data-mining to persuade people to buy refrigerators, subprime loans and fidget-spinners that they accidentally figured out how to rob us of our free will.