What would be their logical conclusion? Will they report back that we are too primitive to bother with? Or will they simply compute our immediate destruction? If you met one, how would you reason with it?
http://www.telegraph.co.uk/science/space/7960929/Aliens-could-operate-through-thinking-robots-astronomer-says.html
http://www.telegraph.co.uk/science/space/7960929/Aliens-could-operate-through-thinking-robots-astronomer-says.html