At one time, ancient astronomers believed that the heavens were eternal and made of ether. This theory made it impossible for them to observe meteors as burning stones from outer space. Although the ancients witnessed meteor showers and found some on the ground, they couldn’t recognize them as meteors from outer space. They sought out and observed only those things that confirmed their theory about the heavens.
We are like the ancient astronomers and actively seek out only that information that confirms our beliefs and theories about ourselves and the world. Religious people see evidence of God’s handiwork everywhere; whereas, atheists see evidence that there is no God everywhere. Conservatives see the evils of liberalism everywhere and liberals see the evils of conservatism everywhere. People who believe they are creative see evidence of their creativity everywhere, and people who do not believe they are creative see evidence that confirms this everywhere. Whatever does not conform to our theories makes us feel uncomfortable and confused.
Here is a link to an exercise that tests your powers of observation. See how you do!