It is probably not a defect of memory but a difference in the way minds work. What you have done is committed the typical mind fallacy. One example is imaginat

It is probably not a defect of memory but a difference in the way minds work. What you have done is committed the typical mind fallacy. One example is imagination. Some people can have really vivid imagination, being able to count the strides on a tiger. Others have no ability to do imagery at all. Most are probably in-between. In my case, I can't really impose my imagination over reality as if I am viewing a movie. Let just say they like viewing at reality and imagination every other frame.