In the brain, as in computers, space and time are interchangable to some extent, as they are just dimensions. Dimensions are abstract variables: changes from point A to point B.
There are many other spaces, for instance color space, or the space of all possible chairs, or the space of facial expressions. But these don't have same properties as position space; the operators that combine multiple dimensions may each work differently.
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Spacetime combines a commutative position space with a temporal dimension, but temporal dimensions are causal orderings that mostly describe how objects change, whereas spatial dimensions describe how you can change perspective while they stay the same!
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Spacetime adds a new way to change perspective: based on your spacetime trajectory, objects will not only change their relative position but also their spatial extension and rate of change. But that does not make temporal change and spatial arrangement interchangeable.
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