Remembering the page of text is just a matter of looking at the image of the page and reading the words. Because it is so easy to remember things, people with these exceptional memories are sometimes not as good at interpreting information or using information in new ways. They can also have trouble forgetting trivial items or things that they want to forget. Sometimes it is very useful to forget. Psychologists study memory to find out how it works, and its limits.
Memory appears to be more than one thing.
When you first experience something, your senses record it for a very brief time, sometimes only a fraction of a second. This brief memory, called Sensory Memory , makes some interesting things possible. A movie shows a series of images to the eye. Each image is remembered just long enough for the next, slightly different image to replace it. We interpret this sequence of images as movement.