"What does the Big Bang theory have to do with Evolution?"
What does the creation of life have to do with evolution??
Why have a universe with NO life?
What genetic matter was present before Life?
Why is a Theory treated as fact??
The theory of evolution, or more precisely natural selection, presupposes that life already exists.
Theories about the origin of life are a separate matter, and are generally considered by scientists to be on shakier ground than evolution.
In short, evolution is not a "theory of everything".
Because it's as certain as a scientific theory can be. I think from your question that you might not understand the meaning of the word "theory." Hint: it doesn't mean shaky, unproven or a guess of any kind
Why is a Theory treated as fact??>>>>>>>
For the sake of everybody's sanity please go to some school where they will teach you what a theory is and that something can involve fact as well as theory, they are not mutually exclusive. This constant display of ignorance does nothing to advance the cause of creationism.