And I've been moonlighting for the last five years helping with a project in Africa.

In 1989, during a trip to Estonia then still a part of the Soviet Union I asked my interpreter, a moonlighting dentist, to take me to her dental clinic. Beyond getting a glimpse of the equipment old and sickly green I learned that my interpreter and her colleagues were augmenting their state salaries with direct (and much higher) payments from Finnish dental tourists.