My idea could best be summed up by graphing a line. The line represents an
individual's life (or the time of the individual's life) and each coordinate along the line
represents the individual at a certain point in space-time. Since a line is in fact
nothing more than a continuum of many points, the individual's body is in effect
creating a tunnel, or conduit as I call it, through space-time. This effect can best be
shown by taking a camera and keeping the shutter open while someone walks in front of it.
The person appears to be a continues streak on the film.

Now with this being the case, can someone's consciousness, which some believe is
connected to but separate from the body, use this conduit to travel to various points
in time in the person's own life? They wouldn't be able to travel to before they were
born, or after their death, but would be able to travel to any point in space-time
where their body had been.

This is a short and crude explanation of my idea, but I'm sure you can get the
general notion of it.