That was one of my issues with the 10 and 11 dimensional theories. I could never get my head arou8nd what the other dimensions were supposed to represent. but thats cause i would always lump all the possible realities into one dimension. so i could figure height, width, depth, time, and our place in the multiverse. i never thought to actually seperate realities into their own dimension. basically I thought of dimension 5-10 as being one dimension.
"The reason an author needs to know the rules of grammar isn't so he or she never breaks them, but so the author knows how to break them."