See the Quora answer first.

Is that a 39 dimensional universe or the 39 dimensions physicists must keep in their brains when wrangling with astrophysics and quantum physics all at the same time searching for that universal equation?

I always think about the fact that the average person can handle 7 +/- 2 chunks of information but somehow, some people can actually hold a lot more: the weight of a neutrino, the strong force, weak force, quantum spin, the composition of a star, and the speed of light, and on and on.  

Match that with a good memory, and your hoboy you’ve got power. 

The funny thing is the physicist is dealing with real physical dimensions, each with their own unique behaviors, while the mathematician is abstracting them. Two different kinds of thinking. 

Could a mathematician handle the calculating the underlying heat of the universe [or some other all encompassing universe number] from the moment of the Big Bang through the end of time? 

Could a physicist imagine a 60 dimension space if it wasn’t grounded in physical properties? 

What’s interesting is that no matter how many dimensions you can keep in your head at the same time, most of your brain is made up of two dimensional neural cortexes.

Somebody told me that Einstein has a 30% spatial reasoning area. But I can’t attest to the reasoning of the person that told me that.

In any event, more chunks would be handy!