Jerry just got back from a trip to Italy and his friend gave him his book manuscript that's written in Italian. How can he translate it? Leo says that no computer is going to do a translation that will sound natural — at least not yet. For now, a human will always do a better job translating in an idiomatic fashion, but it's not cheap.
There is a less expensive form of translation called Mechanical Turk. It uses humans, but they do little bites for a small payment. They do it with several users and then take a consensus of what the translation is, and it's surprisingly accurate.