@OldGrumpy,
No matter how many times OldGrumpy, that it is explained to you that no one has to explain "how" you will still not understand this basic premise.
Short answer, we don't know.
Even if it was explained, I'm doubtful you would understand the explanation, or deny it on principle.
First off, define "nothing".
What does a "nothing" look like?
How do you measure it's nothing?
You don't know.