Because that is where the evidence leads us.
To quote Wiki:
"The physics of the electroweak epoch is less speculative and much better understood than the physics of previous periods of the early universe. The existence of W and Z bosons has been demonstrated, and othe predictions of electroweak theory have been experimentally verified."
So how in the world does that make you KNOW there was an electroweak epoch?
No it doesn't.
How is that?
I sincerely doubt that unless you have defined "observed" in a way that differs from what "observed" has traditionally been understood to mean.
Yes it is.
I am sorry you believe in fairy tales.
When you make something up in your head, it is called imaginary.
I didn't make anything up. Don't make false accusations.
Horses are no more imaginary than the Big Bang.
You just previously stated it was imaginary. Make up your mind.
Good. We are agreed that you have produced no arguments against the Big Bang.
What I did was show weaknesses in the big bang theory. Until you can demonstrate that the electroweak force is a reality, and that dark matter and dark matter are indeed realities, then the real possibility of their non existence would throw the theory into serious danger.