Forum:Hyperspace Vs. Dimensional Transcendentalism

I was trying to get some information about traveling through dimensions which is a common occurrence in the Doctor Who universe. In particular, I was watching the seasons of the Fourth Doctor. In the "Robots Of Death" Baker explains that the Tardis exists in another dimension and while "Dimensional Transcendentalism" is explained in the series and the Index File I was confused when the younger Timelord Romana in "The Stones Of Blood" claims that "hyperspace" is a theoretical absurdity. hyperspace, simply defined is a reference to any dimension greater than the 3 or 4 dimension we are currently aware of. This episode confused my understanding of the premise the series uses to explain the Tardis itself which is supposed to transcend into a different dimension. But the questions remains, how can the Tardis "transcend" into another dimension and not be in another hyperspace dimension. Prima facie Dimensional Transcendentalism and Hyperspace seem to be related that does not seem to be the case in the "Stones Of Blood" episode. So how should the Tardis be explained?