So we've actually observed the curvature of space-time? What kind of instrument do you use to see this? Which instrument is it that allows you to observe quarks? Which one allows you to observe electrons? There is a whole lot of indirect evidence for all of these things, but there is no direct observation of them whatsoever.
No matter how sophisticated and/or advanced the technology is, in the end it is as much a captive of mankinds' 'senses' as is man.
We can only know what our senses allow us to know. We are completely blind, deaf, and dumb to anything that exists beyond the outermost reaches of our senses.
There could be a dozen more primary colors in addition to the 3 we know, but we would be blind to them.
Mankinds science is good for some things, but we should never allow it to become the final authority, since it can only know what mans' senses allow it to know.
The discerning mind would not confuse mathematical theories with speculative ones.