This post encourages colleges and universities to end tenure at 70. Why do these people keep hanging around? (I know at least one such person.) It’s because they are on the left, and until very recently, almost none of the voices they were hearing were telling them that it was wrong to keep teaching when so many younger people wanted to get a job. Nobody in the NY Times or The Nation says this kind of thing. It is only people like me who do so.
Incidentally, in the comments one person suggested that Noam Chomsky should be encouraged to retire. Actually, he has. Back in 2008, I sent a surreptitious email to the administrative assistant in his department wondering about this, and she said he had retired three or four years earlier, she wasn’t sure which. She added that he continued to teach part time, though. Anyway, the reason I had sent the email was that even back then I had already been thinking about this topic. I was sick of hearing about how greedy corporate heads were. Staying on the job when you're old and younger people need your job is a type of greed, I decided.