<p><font size="2">We might be taking dimensions a bit too literally. If we take Cartesian coordinates and add a z axis we get a way to measure 3 dimensions. We could, less conveniently, use a concentric or polar system with only one dimension (depth) and angles. Mathematically, there are obvious advantages for the former, particularly linear (matrix) algebra, but it's still just a measure, not an intrinsic property. </font></p><p><font size="2">Emperor, you might want to look into Maldacena's "Holographic Universe", which is an offshoot of the AdS/CFT correspondence. It describes how information transposes into lesser dimensions like a holograph. I avoided that reference in an earlier thread for various reasons, mostly respect. Of course that brings up another question: What is information?</font></p>