Something to think about:

Paul Westhead was 68 years old when he coached the Phoenix Mercury to a WNBA championship.
Marynell Meadors coached the Atlanta Dream while she was 64 to 69 years old (including playoff appearances).
Bernie Sanders runs for president of the United States at 74.
Donald Trump and Hilly Clinton run for president at 69.
Joan Rivers won The Apprentice at 75.

Nobody would hire people of their ages for a corporate management or academic professorial job.

But it’s important to realize that in some ways these people are outliers. They benefit from a combination of genes and opportunities – seeds sown before they reached their sixties.

When looking at age, it’s about the variance, not the mean.