> a large proportion of people could work in some job up to age 80 (possibly after changing jobs) It would be an interesting question given most of the aged pe

> a large proportion of people could work in some job up to age 80 (possibly after changing jobs) It would be an interesting question given most of the aged people change their job. Then those categories of jobs would probably be overrun by aged people seeking those jobs, and hence poor wages and rampant unemployment.