Maybe it’s the fuss over Back to the Future Day that’s got me thinking of time and space and where I fit into the universe. Maybe it’s the questions of my seven-year-old who is trying hard to grasp the space-time continuum. (I didn’t dare breach the subject of time travelers and the Temporal Prime Directive with her.)

For all the world’s fascination with time travel, its possibility, and its implications, no one has accomplished such a feat. (Unless you listen to late-night talk radio and then, well, time travelers already live amongst us.) Continue reading →