It’s a learning thing and I asked was it correct? My mind may not know the math however it will not stop my mind from learning it.

It was Reimann (sp?) who threw out the Euclidian axiom that parallel lines can never meet and set the stage for Einstein's fourth dimension. In idealized math we frequently ignore circumstances that don't affect the matter at hand. When you draw a square on a piece of paper it is counterproductive to account for the thickness of the ink or the inconsistencies of the paper even though we know they exist and when we scale another dimension to form a cube we still ignore it. So it is always curved but until and unless we need to account for the curvature treating it as flat gives the best result. (There is also the issue of whether curved space is flat in dimensions higher than four which opens a new can of worms)

It gets even more complicated and mind boggling when you add in the up to 13 dimensions of string theory.

So they are both correct than ( for me it’s a learning thing , I love learning new things ) my mind is absolutely thirsty for knowledge and it seems to go batshit when I start thinking creatively than it’s a beast.