Quote from Martinghoul:
Fine, we can argue the specific technical merits of using one methodology or another ad nauseam. Neither do I have anything against alternative methodologies as long as they are peer-reviewed and rigorous.
My issues are non-partisan. My problem is that I just don't see why there should be a bias. What objective reasons do I have to believe that John Williams's numbers are more reliable/worthwhile than the ones coming out of the BLS? Why are BLS numbers necessarily "intentionally massaged" and SGS ones aren't? What basis is there for conspiracy theories? It's not like you can make a case that Williams is impartial and therefore his calculations shouldn't be biased. The guy makes a living out of selling this stuff to people, which means he's massively long the SGS - BLS spread. The more shocking the number he publishes, relative to the official one, the more fame and fortune accrues to him (same issue with other pundits).
Well if there are to be biases in the numbers, then John's figures must lead away from BLS otherwise he would cease to exist, and the gov. bias will naturally lean away from wasting money on indexed people, particularly if they are unlikely to vote for them.
However this group is growing too large to ignore and so a little bending of the figures must appear irresistible at times.