Age Limits

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Minimum ages are pretty straight forward and reasonable. Who wants a 12 yr old buying booze or guns, driving a car, or voting?

I'm wondering about the older age limits, or lack thereof. Airline pilots and surgeons are forced into retirement as they "age out", but not legislators, or even judges who can get lifetime appointments.

If we presume that age makes people less nimble or adaptive or coherent as they fly a plane, or perform surgery....does it make sense to let them legislate and adjudicate, for as long as they live?


(I'm also wondering if age limits would have made our presidential choices more appealing, by eliminating the 70+ yr olds and giving younger candidates a real chance....)