Does our universe have only 4 (3 spacial + 1 time) dimensions? Or just because we humans are three dimensional beings can see, feel and imagine only 3 dimensional objects, we say that our universe is 3 dimensional space? Can there be other beings in our universe it self who are attributed to more than 3 dimensions, for whom time would just be another spacial dimension? We would never be able to see, not even imagine such beings..
(two contradictory explanations would be appreciated)