I didn't know black holes are considered theoretical. I'm no astronomer, or physicist, or anything like that, but I was pretty certain we had concluded there are black holes in our universe, due to these voids we view that appear to suck up all light passing them. I thought the only theoretical part was that we can only speculate on the actual make up and physical properties of them since we can't see or touch them. I'm fairly certain they are not actual, physical, holes, but I thought we had proved something existed that we labeled as "black holes."
just my public school powered opinion.
The Tao is like a glob pattern: used but never used up. It is like the extern void: filled with infinite possibilities.