One common idea that comes up in time travel movies, stories, etc. involves meeting your pastself. How do we make sense of this philosophically? Suppose that I travel back to 1992 and meetmy 10-year-old self. We might at first be tempted to say that, in 1992, there are 'two Jennys'. Butis that the right way to describe things? An alternate way to look at the situation - there's just oneJenny, but the older 'stage' of Jenny is currently located at the same time as the younger 'stage'of Jenny. Some philosophers talk about people (and other objects) as being 'space-time worms':'I' am composed of all the temporal parts of myself, from birth to death. 10-year-old me is a 'part'of me in the same way as my finger is. So our previous example really should be viewed as acase of worm-Jenny coiling up over herself, making a loop! Gross.What do we think? Is this worm view the right way to think of our relationship to our past/futureselves? Are there other issues that time travel causes for personal identity? (for instance: timetravel might produce a 'break' in the worm - a gap between a person's temporal parts. is that aproblem?)