I google "Paul Samuelson ergodic axiom 1969", and get a page full of results by...
...Paul Davidson, of course.
If you're scratching your head, don't worry about it. I'll get over it.
The Lonely Unicorn
4 hours ago
Daniel Kuehn is a doctoral candidate and adjunct professor in the Economics Department at American University. He has a master's degree in public policy from George Washington University.