Tracking flesh and blood people through time using tax returns from the IRS yields dramatically different conclusions than tracking buckets of people using Census data. I'd like to do a visualization of income bracket churn in the US. From what I've read I imagine it would look roughly like this:
http://www.nytimes.com/interactive/2008/02/23/movies/2008022...
Also Thomas Sowell has written extensively on this exact subject. Here is an article about this misconception that is a lot more elegant than this comment:
http://www.realclearpolitics.com/articles/2007/11/income_con...
Tracking flesh and blood people is a poor methodology as all but a handful of trust fund kids start at the bottom and work up.
The Social Security Administration also projects that the situation will stabilize. They suggest that, instead of complete Social Security reform, the payroll tax simply go through a graduated increase ending in 2081. Krugman's main criticism with this math is that GDP growth projections are needlessly pessimistic, meaning that the revenue projections are also pessimistic.
Either way, he is not arguing against all change to Social Security, he is arguing against the loudest voices that are constantly screaming that Social Security is a giant disaster that will tear the govt down in flames.
When I asked for context I wasn't asking for what the CBO is, I was asking for what the economic assumptions (of which there must be many) the CBO made. I was also asking for the context of the outlay in respect to the rest of the government debt and budget.
To say "GDP is obviously growing more than that" (especially while the world is in a deep structural recession) is a similar argument to Republicans pointing to sunspot activity and saying ("so theres no CO2 problem!") while ignoring all other data on climate change.
http://www.nizkor.org/features/fallacies/circumstantial-ad-h...
One of those is not like the others. In the long run poker is almost entirely a game of skill.