: : : The real fourth dimension is TIME. There are a number of other theoretical dimensions in quantum mechanicvs, but I sopmehow don't think that these are the ones to which you refer (nor am I at all certain that they have numbers assigned...).

: : Time is nothing more than a tool used in measuring the rate at which the universe moves....ie moles,lbs, and g. Nothing more than a measuring cup, not a demension.

: Chris, you should check on that. Remember, dimensions do not necessarily have to be spatial, they can also be temporal. Time is definitely a dimension -- which one it is may be up for debate, but it is a dimension nonetheless.

I have a few questions for anyone who cares to answer:

1. Why do you think that time is anything more than a concept?

2. What exactly is the definition of a dimension (a good explanation)?

3. Why do people think that there are "dimensions" anyway?