Social Security & Medicare

Nursing, for instance? Maybe there's a better way to figure out which jobs are more physically stressful than others, but the basic premise of my idea is that there are differences between jobs, not all workers are stressed equally, and that we can restore equity to those at the most difficult end of the scale by allowing them to retire with full benefits at 65 by having others wait until 69. Also, as we get into a society that does less and less physical work over the decades, we naturally can transition the retirement age to something more realistic than 67.