In a behind a desk job doing what they have immense experience doing I think they can be very productive. Even in SWE it doesn't take massive intellectual agili

In a behind a desk job doing what they have immense experience doing I think they can be very productive. Even in SWE it doesn't take massive intellectual agility to write 90% of production code and that's a relatively brain-utilizing job. Lots of 72 year olds nowadays are quite healthy and mentally sharp, I think the trend will continue and future median 72 year olds will more like current 60 year old. Let me put it in another way. I think a 60 year old doing manual labor in 1980s would be less productive than a 72 year old doing desk work in 2030.