Originally Posted by bp2:
“No it isn't another name for dimension. It is a 2D surface that is flat. It was used as a barrier. Also in response to your earlier posts the TARDIS is not a Tesseract because a Tesseract does not allow a small 3D object to contain a larger 3D object.”
Sure, if that's all it was.
The outside of the TARDIS could be the projection of one 3D portion of the tesseract into "our" 3D universe.
By analogy... Imagine a hole or tear in a 2D plane punched through by a hollow cube or square cross-section tube. How big would the inside of the square tube appear to be to a 2D entity? Could it appear to be bigger? The answer is yes.
How would the 2D entity conceptualise the "space" in the tube?
Entering the tube they'd be in 3D space without being able to perceive it. And one
face of the tube could be much longer and so bigger in area than the area of the intersection with the 2D plane. Thus it could easily
appear to be "bigger" to a 2D entity.
And so, by analogy, could the TARDIS. Just increase the dimension count by 1.
You're failing to think inside the tesseract.