Finding common ground or even a common language is the difficulty at hand.
Yes we think in 3d but we can also think in 4d with only a little effort..
The only way to perceive 5 or more dimensions is indeed with math.

I contend that there are only 2 basic dimensions with upper harmonics of minor dimensions.

Rotate length and height 90 degrees off center and you have the third dimension.
Compensate with space time and you get 4 dimensions.


A bubble of new dimensional space time is a fine way of looking at a black hole. The shocking statement that there are no black holes is a kind of cosmological polemic meant to gain attention but harms understanding.

This a beautiful cosmic model that is about 10 years old check it out