[_yb2s]

Although I (and I assume Patrick above) were joking, I will back you up here- having studied and worked with physicists. Some people can visualize, through practice and psychological “tricks” higher dimensional spaces- and different people can do this to different levels. Some people can instantly intuit approximate geometric solutions to high dimensional problems without working out the math- so I know they are either visualizing it, or doing something similar. I can generally visualize 4D with some “tricks” that compress the problem. For example if you can imagine varying configurations of the same 3D space, that itself is essentially at least a non continuous 4th dimension. If you can imagine that evolving into new configurations, you are starting to visualize or at least imagine 5 dimensions. Some people appear to be able to so this for ~8 dimensions.