Fortunately, we live in a adversarial legal system, where each side in a courtroom makes a self-serving argument, as opposed to a balanced one, and its up to th

Fortunately, we live in a adversarial legal system, where each side in a courtroom makes a self-serving argument, as opposed to a balanced one, and its up to the jury and judge to figure out a balanced path that reconciles those self-serving viewpoints. (And if we're going to limit rights to people who can understand complicated issues and make balanced arguments about them, an awful lot of 85-yer olds are going to be in a bit of a pickle. I agree, though, that it would be interesting to explore excluding anyone who, say, needs to wear diapers from both political and legal processes... There is a minimum voting age, after all, why not a maximum one?)