Right! It was once believed that as we aged, the brain’s networks became fixed. In the past two decades, however, an enormous amount of research has revealed that the brain never stops changing and adjusting. Learning, as defined by Tortora & Grabowski (1996), is “the ability to acquire new knowledge or skills through instruction or experience. Memory is the process by which that knowledge is retained over time.” The capacity of the brain to change with learning is plasticity.