Aliens may be using thinking robots

Aliens may be using thinking robots: "Aliens could be operating through sentient robots and the hunt for extraterrestrial life should take this possibility into account, a leading astronomer has said.

Seth Shostak, of the Search for Extraterrestrial Intelligence (SETI) Institute in California, said humans had a greater chance of picking up signals from alien-operated robots than from the biological lifeforms that had created them.

The quest to find alien life so far has generally followed standard rules of biochemistry, working on the assumption that detectable extraterrestrial beings would be biologically 'alive'."