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Comment Re:Better leave now (Score 1) 239

Not only that but, it might not be safe to try and rendez-vous: http://io9.com/5889628/warp-dr...

"Any people at the destination," the team's paper concludes, "would be gamma ray and high energy particle blasted into oblivion due to the extreme blueshifts for [forward] region particles."

sure, maybe we can use this new-fangled drive to meet up with them, but, when we do, we will release a gamma ray burst that will sterilize their entire ship.

Now maybe it might be possible to aim to "miss" them by enough that little gets to them and then the last gap can be closed as subluminal speeds, but.... that ah, sure would be one hell of an entrance.

Comment Should we say hello? (Score 1) 239

We could send radio signals that far, with the big dish at Arecibo. If they have intelligence, and radio, we can communicate with a 1000-year round trip time. Maybe we should transmit some of the proposed canned messages to other civilizations every month or so.

If there is other intelligent life out there, it looks like they're a very long way away. Too far to talk to round trip, even at light speed. None of the known extra-solar planets within a few light years look promising.

Comment Re:So much for Net Neutrality. (Score 3, Insightful) 56

> It will cost billions to fix for the US and the taxpayers will foot the bill.

It already cost us billions, and it was always going to cost us billions more. Any suggestion they were not going to waste that money anyway is just laughable. They will spend as much as they can justify in their crusade against whatever bogeymen they can dream up.

Comment Re:Festo has been doing this for years. (Score 1) 36

Right. Traditional pneumatics is rather dumb - most of the time it's on/off, with air cylinders pushed up against hard limit stops. Positional control of pneumatic cylinders works fine, but it takes proportional valves, feedback sensors, and a fast control system. Until recently, industrial systems tended not to get that fancy.

I was interested in using pneumatics for running robots back in the 1990s, but the available proportional valves back then were big and expensive. One useful model of muscles is two opposed springs, and a double-ended pneumatic cylinder can do just that. You can change both position and stiffness, separately. You can simulate a spring, and recover energy. Someone did that at CWRU a decade ago, but the mechanics were clunky. Festo does that elegantly with their new kangaroo. Very nice mechanical engineering.

Shadow Robotics has a nice pneumatic robot hand. Shadow has been doing pneumatic flexible actuators for many years, but now they have good controllability.

Comment Re:Weak (Score 0) 312

With omniscience . . . you don't need omnipotence. With omniscience you don't need ANY power because you know how to create (from nothing) or seize control, of any power, in any time frame, to achieve any effect.

Bzzzzzt---Wrong.

Omniscience without power means you know everything but can't do anything about it.

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