You ever see a dog that’s got its leash tangled the long way round a table leg, and it just cannot grasp what the problem is or how to fix it? It can see all the components laid out in front of it, but it’s never going to make the connection.
Obviously some dog breeds are smarter than others, ditto individual dogs - but you get the concept.
Is there an equivalent for humans? What ridiculously simple concept would have aliens facetentacling as they see us stumble around and utterly fail to reason about it?
Yeah, I’m not arguing that time can be considered a fourth dimension, or the relationship between time and space.
But the comment about 4D being hard to comprehend was referring to the idea of a fourth spatial dimension (as we could comprehend such a thing). Obviously, we don’t have a hard time comprehending time (at least superficially), so the comment about it being “comical” is pedantic and has strong “AKSHUALLY” energy.