Imagine a species of two-dimensional creatures living on a sheet of paper. The creatures can only move in these two directions and can only perceive these two dimensions. If you were to pick up the piece of paper and crumple it, the creases that you create will have added a third dimension to the piece of the paper. But the two-dimensional creatures would still only be able to perceive their two dimensions, as they too would have been crumpled along with their universe. When a crumpled creature tries to cross a crease in the page, they will be prevented from moving forwards in a straight path and shifted sideways by a “mysterious Force” created by the (imperceivable to them) simple change in geometry of the third dimension. They might give it some crazy name like gravity.

I am currently reading a popular-science book (light on the phys. so you can slam it down fast) called Hyperspace by Michio Kaku, which uses the above example as an introduction to string-theory and how current research shows that the forces of nature may be affected by multiple dimensions outside of our perception.
It says that the theory can explain wormholes, black holes, and time travel.
And I thought this book would be a change from the last few books I’ve read which were also Fantasy.

Currently Sucking On: My Saint Jude Medal