You might as well make the arguement that there is no indication that bears crap in the woods. Kotlikoff is a paid for shill for the fairtax. Trying to pretend Kotlikoff is some neutral third party is just the typical honesty pigdog brings to the debate.
"... just the typical honesty pigdog brings to the debate ..."
Easy with the personal attacks.
I don't see that your analogy makes much sense however. There are actually five people cited as authors of the report in question. Do you find them all to be "paid for shills" - especially so since AFFT is not mentioned in the paper?