Our brains, as a matter of survival, evolved to process complex situations quickly. The brains that did not learn to process complex situations quickly, simply perished. One of the consequences of this is that we all have filters that let certain kinds of information in and bounce others. This is done out of efficiency since a great deal of our energy goes to operating the big mass on top of our shoulders.
One such filter is confirmation bias. This is the tendency to filter out all information that does not support an idea or precept we already have learned. Everything is true to the person who believes it. This sort of cognitive bias distorts our decision making in macroenvironments that are in the process of changing rapidly. As we work to confirm, validate or otherwise reinforce what we think we already know, we may well avoid some threatening situations but end up missing very valuable opportunities to capitalize on change. Do you want to be right or do you want to create the business and life of your dreams?
New creations, insights and ideas are the products of new neural connections in my brain and I can't learn what I think I already know. If I hold on to the past the future has no space to grow in.