Parallel universes are still a mystery to us, but there's a lot of theories behind those mysteries. In Spidersilk the novel we are exposed to a few different dimensions. This adds an exciting element to the novel that really draws the reader in. One of the most amazing things about this is we see a connection between the dimensions. For instance, in one scene Tia is catching the same Channel 88 news that Mark watches. There's also the mystery of Starbucks, espresso and other pop culture elements being such a hit in Mark's current dimension. This is fascinating because this aspect of culture comes from our own dimension, or do they? Many scientists believe that during the Big Bang two universes collided together that were made up of cycles of evolution. This would explain how two totally different dimensions would maintain some of the same ideas (such as the company Starbucks), food and ways of living. Here's a pretty cool article on some of these theories: http://www.dailygalaxy.com/my_weblog/2010/11/our-universe-was-created-by-a-cyclical-trillion-year-collision-of-two-universes-.html