If you think that you've found an error by Einstein, do pray tell enlighten all of us! If not, then admit that you're wrong, again.
It doesn't work like that - Einstein is not de-facto correct. Our investigation does not start with a state of innate Einstein-correctness. Einstein's implied claim that nothing can travel faster than the universal speed of light must be demonstrated.
It's interesting that you argue that since you've not personally experienced the atmosphere above 40,000 feet that you know that it's not there.
Not what I said. It's that I don't know it IS there, and I have no reason to think it's there, except people saying so. It's the same with God. I have no reason to suspect he exists except people telling me he does.
But you also argue that even though you've only travel personally at 600 MPH that you know that there are speeds greater than 300,000 m/s. It seems to be that your belief system varies with the need to support your FE idea.
that there can be speeds greater than 600 MPH is self-evident, because speed doesn't "exist" in the same way that God, or the atmolayer-above-40k-feet MIGHT exist. Speed is a measure of something, so debating its existence is nonsensical. It's like asking if the number 194932832948293829103 exists. I have never personally counted to 194932832948293829103, but its existence is a given because of what it is. It does not require verification, it exists by its own nature.