"Time" not a dimension.

[Zenith]

P.S. As about the idea that time is the 4th dimension, something is odd: all other three dimensions are measurable in meters (not seconds, grams, joules, etc.). You know, if you put a cube in a 3d world, with the margins parallel to the axis, you check its sizes this way: width, in meters, by checking the X axis; height, in meters, by checking the Y axis; and the depth (or how that's called), in meters, by checking the Z axis. They're all measurable in meters, so why should the 4th be measurable in seconds?? Also, what if there are only 3 dimensions? (if so, then perhaps we should not struggle to add a 4th non-meter-measurable dimension).