Science fiction now a reality?

Daily Beast:
‘Star Wars’ Tractor Beams Are Real

Scientists have figured out how to create a sound beam that can hold, move and rotate small objects from far away.
There is still the problem of scaling it up to the point that it might become a weapon, but it is interesting how fiction can lead to the creation of new devices.

What I would really like to see is a counter cyber attack weapon that can hone in on the attacker and destroy his computer.  It should be possible, but it will take some engineers and geeks to pull it off.

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