As the amazing human brain develops, it moves from a pretty primitive state of jumbled up nerve networks, through to a very complex series of coordinated networks over the years. The first networks that come on board start to link our senses to our brains – we can start to see and hear. As we age, our biology and our growing experiences connect pathways and we are able to do things that are more complex – so complex that some of our brains can even master algebra, fly fishing or a baking a sponge cake.
Our brains also start to become more efficient. We start to prune back the pathways we don’t need so that we can become more efficient at what we do. At about age 25, the pathways in our brain are covered in an insulating substance called myelin, which essentially stops messages leaking out on their journey along the pathways and we get even more efficient at the things we practice. Some things even become automatic.
So, as we journey through life, we are taking information into our brain and trying to work out where it should fit. In essence we make a set of rules, core beliefs or schemas upon which we build up our bank of ideas about how the world works and what is going to work best for us. The rules that govern our thoughts, feelings, and behaviours are buried deep within our brain. Each of us has a unique bank of rules because we all started with varying biology and then from the very get go, we all began to experience the world differently.