When the conversation at your next...

...cocktail party turns to Social Security reform and raising the retirement age (I know what you're thinking: What kind of cocktail parties do you go to?), remember this little tidbit from Ezra Klein:

Start with the basic rationale for raising the retirement age. As Rep. Paul D. Ryan (R-Wis.) has argued, when Social Security was signed into law, the retirement age was 65 and life expectancy was 63. "The numbers added up pretty well back then," he said on Fox News. But that's misleading. That figure was driven by high infant mortality. If you were a white male who'd made it to age 60 in 1935, you could expect 15 more years going forward. If you're a white male who lives to 60 today, you can expect 20 more years going forward.

Moreover, those averages conceal a lot of inequality. In 1972, a 60-year-old male worker who made less than the median income had a life expectancy of 78 years. By 2001, he had gained two years. Meanwhile, workers in the top half of the income distribution had gained six more years. Insofar as the argument for raising the retirement age is that "Social Security beneficiaries live a lot longer today than they did in 1935," it should be restated as: "Social Security beneficiaries tend to live somewhat longer today than they did in 1935, and that's much more true of rich beneficiaries than poor beneficiaries."