We don’t believe things because they’re true. We believe them because they’re easy to believe. As a qualitative researcher, one of the main things I do is help my clients understand how people form opinions and make decisions. Do this long enough and you’ll notice that people believe some crazy stuff. So, I regularly need to figure out why people believe things that are demonstrably untrue.
We live in a world inundated with information. What’s more – newsflash! – a lot of the information we encounter is incorrect. Sometimes this inaccuracy is inadvertent, sometimes it’s deliberate. Figuring out what’s true is increasingly important. And one thing that can make this particularly challenging is that sometimes things that aren’t true just sound like they are.
Cognitive psychologists have a term for this: ‘the illusory truth effect.’ It’s our tendency to believe something simply because it’s familiar – we’ve heard it repeated many times over a long period. This repetition increases what’s called ‘processing fluency,’ which is a fancy way of saying that something is easy to think about. Our brains then mistake that ease for accuracy. If you’ve been told your entire life that the earth is flat, that doesn’t just sound true, it sounds obvious.
I see this as being a problem. When something intuitively sounds true, we’re likely to take it at face value and not challenge it. And this is how lies spread virally. I’m reminded of that remark attributed to Mark Twain about how a lie can travel halfway around the world before the truth can put its pants on. (Actually, there’s no proof he ever said that, so maybe this is illustrative of my point.)
The increasing importance of social media and artificial intelligence makes this a particularly urgent issue, as these tools play a significant role in perpetuating untruths. Social media algorithms amplify repetition, and repetition drives the illusory truth effect. These algorithms also magnify saliency – they make things seem more significant than they are. These factors put a lot of responsibility on each of us individually to vet information.
This isn’t something for which any of us has the power to effect broad change. We need to focus on our own thinking patterns. This means getting in the habit of questioning conventional wisdom. Because a lot of conventional wisdom out there is complete nonsense.
So, when something is easy to believe, be suspicious. The fact that it’s easy doesn’t make it true.
Remember when we all thought the world was flat?