Fact - it is highly unlikely that.....
Fact - It is also unlikely....

If there is a degree of uncertainty or likelihood then, by definition, it is not a fact. It is an informed opinion.
This seems to reach to the core of the dilemma that I was pointing out in my previous post.

Cambridge Dictionary
Fact - something that is known to have happened or to exist, especially something for which proof exists, or about which there is information.