So it looks like we are back to Lyndon's Tired Light theory!
I understand that there are 'back of the envelope calculations to show that bees can't fly, that supertankers couldn't bebuilt. I had a set of encyclopedias when I was little that said a 'back of the envelope calculation' had said that man would not get into space let alone onto the Moon.
In the end what matters is what happens, not what is written on the back of second class mail.
Cheers,
Lyndon