Confirmation bias.

​Confirmation bias is a process that leads people to seek out information that confirms their beliefs while ignoring or dismissing information that contradicts them. This can lead people to ignore evidence that challenges their beliefs and instead focus on confirming them.

For example, if you're a person who believes in climate change and wants to believe it's happening, you might seek out information about climate change. But your belief may be wrong if you don't see any evidence for it. So instead of seeking out evidence that supports your belief, it's important to be open-minded and try to find as many sources as possible.

So how do you stop confirmation bias?

Again, stop looking for information that supports your view. Instead, ask yourself why you believe what you believe and why other people might feel differently about the same thing. Think about whether or not an alternative viewpoint is also right in its own way. And think about whether or not there are other reasons why this person might be wrong, or they're just being defensive because they don't want to change their mind—or maybe something else entirely.

Once you start questioning things a little more closely, it's pretty easy to see where confirmation bias comes from and how it can get in the way of clear thinking and a healthy perspective on situations or topics that might seem like they should be simple black-and-white decisions based on facts alone without any room for doubt or uncertainty whatsoever!