Among liberals who read the corrected version, fewer respondents said the cuts increased revenue. But among conservatives who read the corrected version, over 60 percent said the cuts increased revenue -- as opposed to just over 30 percent of the conservatives who read the version without the correction.
"Once these things are out there, it's very hard to roll them back," Nyhan said. "Some people are quite determined to stick to their beliefs no matter what you tell them."
Throw in one more statistic -- that Americans who have a great deal of trust in the media is down to 40 percent, according to a Gallup poll -- and the magnitude of agreeing on a single truth becomes clear.
That's not stopping some from trying, however. Before he settles in to watch Thursday's debate, Nyhan will unplug from social media -- yes, even Twitter.
"My wife couldn't believe it, but I think there's some value in it," he said. "There's some clarity in having our own opinions and not accruing predigested opinions."