Social media's rapid rise has incited concerns among policymakers and the public regarding its role in spreading misinformation.
Content moderation is a key tool to combat misinformation, but problems emerge when practiced at scale.
The core issue is the lack of a formally accepted definition for "misinformation", which is generally considered as information that distorts accepted facts.
Research shows that this definition breaks down when it comes to more contentious topics.
Author's summary: Misinformation spreads on social media.