It gives us a purpose and a way to remember our past. It's a book written in our mind with pages everywhere. It may not be that accurate, but it gives us an idea. It takes many parts of the brain working together to create memory. Memory is stored in various types of phases such as sensory, short-term and long-term. The more important ones stick around longer and the less important ones eventually fade away like ink on a sheet of written paper. Sometimes we are robbed of our memories by a deadly disease like Alzheimer's or by a personal choice about drug use. However, there are tools and techniques we can use to help us maintain memory. Although not all memories are wonderful and sometimes we want to erase the painful ones. Drugs are currently being studied that may be available in the distant future that will help erase those painful memories for some. But until scientists can truly understand all the mysteries of human memory, no such drugs will be available. Maybe it's best to keep our current memory because that's who we are and it influences our decisions