Our so-called modern beliefs about science are based on what scientists have told us and/or figured out from the last 100 years or so.
Things that we take for granted today were thought to be impossible very recently.
Think about our science in another hundred years. You can't, and neither can the smartest person in the world today.
Now try to think about a world that has been technologically aware for thousands or hundreds of thousands of years with different natural resources and possibly bigger brains than anyone on earth.
We live in a universe so big and so old, that there might as well be infinite possibilities. We aren't really capable of thinking in the infinite, as much as super smart mathematicians would love to have you believe.
It's impossible for anyone living today to have any idea what is and isn't possible through technology or otherwise.
I don't doubt we got some stuff right. But I know for a fact that we don't have close to everything right.