Ummmm ... ok, I am suggesting that conventional scientific theories are not fact until proven to be fact. If they cannot be proved then a scientific theory is no more valid than any other kind - such as the assertion by certain religious movements that Creationism is just as valid as the Darwinian theory of evolution. This was rebuffed by Thorne so I moved the talk on to planetary evolution.
Ozme then put me on the spot by daring me to deny the existence of gravity, and my response is, how can I deny what I do not know?
How is this connected with the main theme of the discussion? Well, I don't think any one theory should be taught to the exclusion of other competing theories. Only when all science is provable can we say "We know the mind of God" and until then we have to allow that, maybe, there are things beyond the power of science to explain, ever. And ... again, maybe ... at the Second Coming, we shall understand what science never could.
When you find a really big Black Hole, it blows too!Thorne: Gravity sucks!