For a large amount of time now, people have been saying that the 4th dimension is time.

But lately I've been thinking, "Which dimension do you move through in the Potal games?" Because in Portal 1 & 2, you clearly do not move exclusively in the 3rd.

If you've watched Rob Bryanton's Imagining the Tenth Dimension, you'll know that sometimes new dimensions occur, when you "fold" previous ones, (If you haven't and hate your brain, I recommend you do so now) allowing us to seemingly jump from one end of a dimension to another, which is basically what Portal is all about. The portalling in the puzzle-series is actually almost identical to Bryanton's example with the ant.

So should the scientists of our world sit down, play Portal, and rethink their theories about time as the 4th dimension?

What do you think?