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Comment Re:Wrong kind of drone? (Score 1) 280

Probably, yes. If you can station a high endurance drone up high it can cover more ground than a bunch of little ones, and only needs one pilot and a launch and recovery team at an airport somewhere. The little ones each need a launch and recovery team. The secret to making it cost effective is to fire a bunch of patrol teams that it replaces.

Comment Re:Just release a special edition Bluray (Score 1) 133

The formula you've quoted is for a particular set of observers in flat spacetime (spacetime near a black hole isn't flat). The Wikipedia article is unclear about what H is, and the link to the Rindler coordinates article doesn't specify either. Also, you have to be careful with the Td(h) formula because it's not giving a simple, straightforwardly intuitive measure of time dilation.

If you look lower down at the "Outside a Non-Rotating Sphere" section, they give another formula:

t0 = tf * sqrt[1-(2GM)/(rc^2)]. The time dilation would be t0/tf, the ratio of time passed for a close observer over a far away observer. The r coordinate isn't quite a classical height (it's a coordinate in the Schwarzschild coordinate system) but it's close enough for intuitive purposes. That function is nonlinear. There's a picture of the curve for Earth's surface and orbit in the Confirmation section, a bit further down. For a black hole the shape would be similar, but the values on the y axis would of course be quite a bit bigger.

Comment Re:Just release a special edition Bluray (Score 1) 133

The ship clearly had the engines on when it ditched the shuttles. Disconnecting boosters or fuel tanks when they're expended is a rather well established technique for increasing delta v. They even showed shots of the fuel gauges and the shuttle engines cutting out.

If you mean the scene near the end where they skim the event horizon, you don't need much delta v at all to get out. You're in orbit. If you mean the bit where they stop on the high tau planet and then leave, that's not realistic and various people, including Throne IIRC, have pointed it out and said that bit of a artistic license had to be included - like the the ability of a ship with chemical engines to get to Saturn in a reasonable amount of time and then wander around another planetary system.

Comment Re:Spike boots (Score 2) 142

There are two popular types of deep ANN at the moment: restricted Boltzmann machines and auto-encoders. RBMs are generative. Autoencoders can also be generative if you train them in a particular way, which works much better so most people train them that way anyway. So you can take an ANN and ask it to draw you a picture of a guitar.

I disagree with the authors of that paper. It seems more likely to me that they've cherry picked particular examples that fool their particular ANN. That's pretty easy to do for humans too - Google "optical illusion." As you point out, there's also the white noise trick. Show a group of people an image of white noise and they'll find all sorts of things in it. Particularly if you ask "you guys don't see the dragon?"

Comment Re:so breakthrough (Score 2) 142

There wasn't a good algorithm for training general deep ANNs until 2006, although convolutional neural networks were an exception to that. It's likely nobody tried it before because computers weren't fast enough and the discovery of layer-wise unsupervised training hadn't made deep networks popular yet.

Comment Re:This whole thing is a disaster waiting to happe (Score 1) 233

Your examples are all of established colonies that were longstanding, self-sufficient and successfully rebelled. If you unsuccessfully rebel you end up very much under the jurisdiction of the parent government. Also, you're presumably talking about crimes committed in the colonies by the colonists, not negligence committed by the organizing group who stayed at home.

Sure, if Mars One managed to actually put settlers on Mars, they lived there independently for an extended period of time (decades at least) and then declared their independence both from any Earthly nations AND the Mars One organization, that colony could reasonably be considered under it's own jurisdiction. If a Mars colony member murdered another, since there's no way to ship him home to stand trial, the colonists could basically make up their own legal system.

The real situation is more like a cruise ship sailing into international waters (or an international airline flight). The cruise ship is governed by the laws of it's registry nation and nobody is going to take it the least bit seriously if it declares independence. If that ship sinks due to the negligence of the owning corporation, that corporation and its officials are likely to find themselves under the jurisdiction of any and all nations where they maintain a presence.

Comment Re:naysyers are needed (Score 1) 233

Columbus spent a long time gathering and presenting evidence to several monarchs that he had a good chance to succeed. Even then, it wasn't a one way mission. Only after Columbus had gone and returned, and reported that it was possible to survive in the new world, did colonization voyages begin.

Comment Re:This whole thing is a disaster waiting to happe (Score 1) 233

That's unlikely to be true. The Outer Space Treaty includes references to UN international law and if it became an issue before a more formal declaration was written up, maritime conventions would probably apply. For private vessels not subject to other jurisdictions, the law of the country they're registered in usually applies. That's usually gotten around with a flag of convenience, so maybe you could register your spaceship in Kiribati or something, after getting them to pass laws in your favour. But then you have to figure out where to launch it from: the countries that have launch facilities generally also have fairly strict laws about space launches, especially when humans are involved.

With the maritime law justification, I don't think there would be many objections if, for example, the US government took legal action against a US company that had sent a bunch of people to die on or enroute to Mars. Particularly not after it was broadcast to the world.

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