How could age or perspective alter a memory!

It can alter the memory because the old you get the less you remember. Perspective makes a person see the world a certain way so if you say you have a different view of the world than I do, your memory will differ in what you perceive to be important.

Answer:This book primarily concerns the normally aging brain, the neuroanatomical and neurophysiological changes that occur with age, and the mechanisms that account for them. It is not primarily about the behavioral or cognitive concomitants of those changes. Nevertheless, there is ample evidence that alterations in brain structure and function are intimately tied to alterations in cognitive function.