I would like to know why Mr. Harold White states that the ship must be in the shape of a 'football' - pointed on each end (as shown in the image). It would seem to me that the ship (proper) could be any shape. The shape of the exotic matter torus would have effect on the warp bubble function. But, the ship is within a 'contained' normal space-time, inside of the warp bubble. So... why would a sphere, a cube, or any other shape of ship not work inside of the exotic matter warp torus? Normal space-time is passed 'around' the outside of the torus, and not 'through' it's open center... correct?