The Atlantic ocean and the Artic ocean.
There are many factors that can make recognizing a bias hard, but one of them is if we have the same bias.
Say for example, that one person thinks that taller people are smarter and they listen to a speech that makes the same statement - they can then think that it's just confirming what they know, and can be a real fact instead of their bias. This will make it harder for them to recognize the bias.
1:it began in july 28 1914- November 11 1918
2: A Fake Paris was Built to fool German Pilots in Word War 1
3:they used a urinated hanckercheif as self defense
