Like many with and before me, one of my first compelling reads as a youth was A Wrinkle in Time by Madeleine L’Engle. In the beginning chapters, there is a most enthralling moment – illustrated by an ant and a piece of string – where Mrs. Who, Mrs Which, and Mrs Whatsit explain how a clever loophole in time and space allows them to travel the universe.
Illustration of ‘the wrinkle’ – Source: A Wrinkle in Time
We know it as “the tesseract”, or, “the fifth dimension”. In reality i.e. geometry, a tesseract is the four-dimensional analogue of the cube, consisting of 8 cells, 24 faces, 32 edges, and 16 vertices. It is, in short, a cubic prism. But at this explanation, the tesseract looses its mystique and magic. In the book we understand the tesseract only as this: The way to bridge the gap between worlds.
In reading L…