One day, our brains will not work the way they used to, we won't be as "sharp" as we once were, we won't be able to remember things as easily. This is what's been engrained in us. We're even led to believe that we can't learn new skills, or take in certain information such as language, past a certain age. But, a new theory holds that it doesn't have to be that way. In fact, as adults, if we continue to learn the way we did as children, UCR psychology professor Rachel Wu asserts, we can redefine what it means to be an "aging" adult.