Complexity Digest 2003.16 - 16
Excerpts: The parallel universes of your alter egos constitute the Level I multiverse. It is the least controversial type. We all accept the existence of things that we cannot see but could see if we moved to a different vantage point or merely waited, like people watching for ships to come over the horizon. Objects beyond the cosmic horizon have a similar status. The observable universe grows by a light-year every year as light from farther away has time to reach us. An infinity lies out there, waiting to be seen.
- Source: Parallel Universes
[ http://www.sciam.com/article.cfm?chanID=sa006&articleID=000F1EDD-B48A-1E90-8EA5809EC5880000 ], Scientific American, May 2003