Good Day! First of all, I'm not an actual physicist so please don't laugh if the following sounds really stupid to you or I don't use the correct terminology. I don't/didn't even study anything remotely related to physics, everything is plainly based on private interest. (The reason I'm still posting in this sub forum follows) During my free period from university I came across the 10-Dimension theory because I found it really interesting. Everything about it sounds logically clear to me when I learned/read/heard about it, so is the String Theory. However! When I made up my own thoughts about how dimensions could be built I already stumbled on the fourth dimension. Who said it had to be duration/time? If it wasn't, wouldn't it completely change the way we look at String Theory and most things similar to it? Is there a logical explanation that I just don't see or it it plainly yet another assumption that is interchangeable? Thank you in advance for your time and patience reading through it!