[Nathan]

This last line is bugging me
"Other things like;such as if the people around us exist or are simply objects our mind has created, are things we cannot find out about if we don’t manage to cross the wall between our reality and the real reality"

Its just seems wordy to me.

I don't know if its any better, but I would word it more like this:

"The idea of people around us truly existing or being figments of our imagination is one that cannot be proven if we do not cross the wall dividing reality and perceived reality."