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Page last updated at 08:25 GMT, Tuesday, 3 May 2011 09:25 UK

Can robots know the difference between right and wrong?


Robots can walk on the surface of Mars, and, more importantly still, they can even carry a plate of drinks from the kitchen to the living room.

But they are hopeless at negotiating the moral maze of ethical decisions that confront humans everyday.

So will this eventually be the robot's undoing? David Reid reports.

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