Ted, This may be redundant as I'm responding too late and you probably know about this but just in case: Anwar Shaik's "Laws of Production and Laws of Algebra: The Humbug Production function" in Review of Economics and Statistics, 1974 complete with a Solow reply and Shaik's "Humbug II" in Ed Nell ed. " Growth Profits and Property" Cambridge press, 1980 are classics oin on this stuff which I think may be highly relevant to your questions. In Solidarity, Ron Baiman Roosevelt Univ., Chicago URPE Midwest Rep. p.S. - Any chance of restarting the venerable Berkely URPE Chapter ? (just a thought)