Hi. Fascinating discussion. I'm new to this forum and I picked this post because you say that space is likely flat or 'Euclidean'. I would agree, but what leads you to believe it is if I may ask?Just like to get an idea of what people currently think what the shape of the universe is.
Since the curvature is likely zero, does this mean that the universe is infinite.
Also, I get the idea that the size of the universe, if has one, extends beyond the light cone. How is this possible?