Simplify the Web Small and Simple things

I like Science Fiction. I especially like to examine writers' creative attempts at explaining time travel. Their theories are often interesting, but they never hold under deep scrutiny. The reason is simply that we don't exist along a continuum of time, we exist only in the present. What we call the past is simply an aggregate of memories and records of events that have occurred (or that we think have occurred). What is past no longer exists in its past form, there is nothing to "travel" back to. Similarly, the future is entirely non-existent.