E-mail sends you mad. This is a fact, known to science since forever. You know it, I know it. The more you deal with, the more insane it makes you. Turns out that Bill Clinton sent just two e-mails as President. He must have been very sane. Perhaps the last sane man on Earth.
I guess the reason this is most surprising is that Bill Clinton is not a faded memory where quirky stories like this are read with misty eyed nostalgia. He is still on the scene; his presidency happened within the lifetime of anyone over 11 years old. So this is a very stark reminder of how quickly things have changed.