Inventing

The Inventor career, which will appear in the Ambitions expansion pack for The Sims 3, may be related to the Science career, though, it's expected to be a completely new job. Sims will need to have a high inventing skill, which will come with Ambitions also, to get promoted often. With it, Sims will be able to build Servos, time-machines, and other unconfirmed things.