[brandonjm]

I had the same question, I don't imagine it takes too many people to decide what it should do and give the robot commands while monitoring it.

[Ianworld]

Looks like according to an old article linked on wikipedia they spent another $100+ million over 5-6 years to keep it going. So not wildly expensive, but not cheap either.

https://web.archive.org/web/20120504171453/http://www.msnbc....