Not knowing the true nature of space-time seems to be same for everyone, including Albert Einstein who invented / discovered / stumbled upon / math'ed it back in 1915.

Not knowing though is massively fun, it's the reason science exists, that and a burning curiosity within each and everyone of us.

Space-time is frequently described as the “fabric of reality.” In some accounts, this fabric…

Those that throw 'reckons' around will jump down your throat when you bring up a scientific theory, or when you say, "No-one knows".

Oh, so we all understand:

The meaning of the term scientific theory (often contracted to theory for brevity) as used in the disciplines of science is significantly different from the common vernacular usage of theory. In everyday speech, theory can…