Despite our best efforts we have yet to determine what other dimensions look like. Are they merely mathematical thought experiments designed to make modern physics work? Or are they actually fully developed universes where parallel versions of ourselves go to work at slightly different jobs? In this episode Josh and Dale try to wrap their 3D brains around the possibility that our observable reality may not be all there is, leading to the question, is it possible that tangible multidimensional spaces exist or is all in le head?

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