But it takes a while to get the hang of the system.

ECONOMIST: When crashing is not an option

Its near-spherical wheels spin on some complicated gimbal system, allowing it to hang a sharp left without describing anything as tedious as a curve.

NEWYORKER: Batman��s Bane

The legal uncertainties that hang over Argentina's entire financial system remain.

ECONOMIST: The IMF and Argentina

Since the robot could hang out in the dark, it could conceivably be equipped with a microphone or tracking system to gather intelligence for longer investigations, rather than one-time interdictions.

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