Here's a breakdown:
* Time is not linear: The tesseract is a concept where time is not a straight line, but more like a woven fabric. It allows for travel through time and across vast distances instantaneously.
* A way to fold space: Imagine a piece of paper. If you fold it, you can connect two points that were previously far apart. A tesseract does this with space itself, enabling travel between seemingly impossible locations.
* A gateway to other dimensions: The tesseract isn't just about travel, it also represents a gateway to other dimensions, places beyond human comprehension.
Think of it as a mystical wormhole that allows for instantaneous movement across time and space, making the impossible possible.
Important to note: The tesseract in the book isn't explained in detail, but rather experienced by the characters. The concept is meant to be a bit mysterious and awe-inspiring, reflecting the vastness and complexity of the universe.