From Jasper de Reus
The whole universe is believed to be like an (expanding) balloon, with a four-dimensional surface filled with the five-dimensional “air” in which the big bang took place. Physicists are currently looking for pinstripes on the four-dimensional space-time fabric, but what if the pinstripe forces pierce through our space-time, coming from the inside of the balloon to the outside? The force would not point in any direction in our four dimensions, but would in five.
Apeldoorn, Netherlands
