What would it take to change Supreme Court tenure to 10 years?

[onenote]

34. Not for the founding fathers

While it is true that the average lifespan was relatively short at the time the Constitution was written, there was a huge gap in the lifespans of the privileged class (which included the founding fathers) and the average person. Talk about 1 percenters...folks like Jefferson, Adams, Madison, etc. had access to far better nutrition and medical care than the average landowner.

You can see this vividly in the first eight presidents of the United States --they lived anywhere from 67 (Washington) to 90 (Adams). The average was nearly 80. Every one of the first eight (and well beyond that) were elected to their first term while they were in their mid-50s to early 60s.

That is the cohort that the writers of the Constitution were familiar with -- they weren't expecting Justices to die at age 50 or even 60. And, in fact, many of the first members of the Supreme Court lived into their 70s and 80s. Four of the first dozen or so ended up serving on the Court for 30 or more years.