Proof that Biases are Learned

My kids continued to amaze me. The other day, my 9 year old is outside hanging out and a neighbor kids rides up on his bike and the two begin talking. Not 10 minutes later, my son says "this is Nathan he's my friend." No challenge to who he was, no care as to what his parents did or where he went to school. No consideration for what he was wearing, or what kind of bike he was riding. "He's my friend" no conditions, no issues with the fact that they had just met. How can he be a "friend" already? Adults cannot do this very well. Hopefully most kids do not have the biases programmed into them that adults do. Biases such as what family they came from, what job they have, and how they take care of their children are all biases that adults carry. Adults decide who they want their kids to hang out with based on whether they approve of the person or not. Realistically its for their own protection as adults have more world experience to turn to. We have to decide if so and so is our "'friend" when get to know them better ( and have them screened appropriately with an FBI background check). But in the eyes of a child, its different. They are carefree and accepting of other kids and someone they have just met quickly becomes a friend. The biases and prejudices kids develop as they grow older are all learned behaviors. They are messages that are programmed into their brains by the adults in their lives. Who is okay and who is not okay is learned as well as where it is safe to play and where it is not safe to play. I agree some of this is necessary. Kids have to be taught boundaries and safety issues. However, for that brief moment in the eyes of a child, the innocence that the world is safe, and no one is the judge, we can learn something from our kids. Wouldn't be nice if adults could be more child like and accepting of one another?