Robotic Warfare

Noel Sharkey is a Professor at Sheffield University in the UK, and he has just written an article for CNN. He is interested in robotics and artificial intelligence, and he is leading a call to ban the development of “autonomous” killing machines.

We might be thinking about a killer robot here, and as many will know there are already plenty of unmanned systems in operation. Drones are very much in the press, but they are flown by a pilot and the decision to kill someone is taken by a human, even if they might be several thousand miles from the action.

But Sharkey is concerned about the future development of systems that can be programmed for a task, but then autonomously make decisions during that task. He does not believe that a computer can make the types of decisions necessary in warfare, or at least not with morality and judgement.

BAE Spider Robot

BAE Spider Robot

There are 2 real sides to the argument about robotics in war. One states that mechanization of warfare would lead to less casualties, more precision, less danger for the troops and all in all a cleaner fight. There would be no more massacres of civilians because a soldier takes retribution for an unrelated attack, fewer accidental deaths etc.

But on the other side we are talking about machines making decisions that should incorporate humanity, such as how many deaths are justified for a particular objective? Is the death of an individual really of strategic advantage? What if the machines malfunction, or are taken over by hackers? Who can be held responsible for their actions? And aren’t we more likely to go to war if we can send machines and leave the boys at home?

All of these arguments are fought over within the robotics community, but we should remember that we have already travelled some way down the road of computerized and mechanized war. Anti aircraft and missile defence as is being deployed in Asia today is no longer a mechanical affair, they are computerized systems that all but fire themselves, and they certainly do not require a person to aim them like in the old films.

Bomb disposal robots, unmanned vehicles and the likes are already deployed, mechanical spider troops that really do bring the idea of cyber war to the modern scenario are under development as this article explains.

One problem is that of foresight, how can we make legislation today when we do not have any real idea of how and how much technology will advance in the foreseeable future. Also this type of robotics often comes from or aids other developments, such as the robot surgical machinery that I reviewed in a previous post. Infiltration and influence is everywhere.

If you would like to get an idea of how far we have come in terms of movement, take a look at this BBC video. A Boston company has produced a robot for military use (testing chemical suits) that moves remarkably like a human.

I have also written a couple of articles covering this issue on the Bassetti Foundation website. Read this article about recruiting robots for combat for an overview and follow the links.

Here you will also find an interview with robotics professor Ronald Arkin in which he describes how looking for funding lead him into designing robots that were paid for by the US military. They are of course the largest investor, a rather sobering thought given the current state of University funding.

Turning Human Waste into Plastic

One of the unsung heroes and villains of modern life is human waste, or poo as we like to call it. It is like death and taxes in that well known phrase about certainty, there is an awful lot of it around, and it is full or carbon.

A few years ago there was uproar when we discovered that farmers were using human waste to make their plants grow faster, a practice that like many of life’s more unsavoury issues has remained largely out of the public gaze for years. But what do we do with all of this waste? We can just pump it out into the sea, or dump it in landfill sites as is common in the USA, although these don’t really seem like great solutions to me. Good news is on the horizon though, a company in California has started to use it to make plastic, taking some out of the dumping category and making use of the carbon.

Admittedly we have the old gag reflex again. A plate of carrots grown with the aid of human waste to go with your minced beef with horse trace pie with a plastic bottle made out of human sewage full of fresh, crystal clear mountain water to wash it all down. But just think about the potential.

Waste Not.

Make Use of Human Waste

Plastic can be produced using human waste, bottles can be made from it, and it is biodegradable, so why not? This BBC video tells the story of an experimental bio-plastics lab called Micromidas, where this process is being experimented and researched, and where human waste is already being turned into plastic.

The process involves making a kind of nutrient soup from the waste to which bacteria is added. They produce something called PHA, a type of polyester. They feed on the waste and take up the carbon and turn it into this form of plastic. Then the plastic containing parts are separated and cleaned.

The material is then dried, the plastic extracted and made into pellets. It can then be used to make practically anything that we currently make using fossil fuel based plastic. There is after all no shortage of raw materials, so proponents hope to replace the old fossil fuel production with the new.

The process is very much in experimental stage, but the researchers hope to be able to produce on mass within the next 2 to 3 years, bringing the price down so that it can compete in a global market. Good for everyone, and the environment.

Just as a slightly less obnoxious adjunct I would like to add that Micromidas are also setting up a lab that is working on turning cardboard into Paraxylene, a chemical once more used to make plastic bottles, again in the hope of getting into and cutting out the fossil fuel market (usually Paraxylene comes from oil). Read this report about their work.

Using White Space for Internet Coverage

Google launched an interesting experiment this week, offering free “super” wi-fi connection to the Internet for several schools in Cape Town South Africa. What is interesting about that you might ask? Well they are using the unused frequencies in the broadcast TV spectrum.

White Space diagram

A diagram of a white space network

The TV broadcasting frequency spectrum is currently divided between many channels, but between each channel there is a gap, a frequency space, often known as “white space’, and the hope is that this space can be used to broadcast high speed wireless Internet access. This experimental system is not without it doubters though, TV companies are not keen because they think there might be interference in their picture, so what better than a small experiment to try it out?

We can all imagine how this experiment might revolutionize Internet use though. In the countryside where infrastructure is lacking but TV is visible the companies could offer a service. In the city where cables are all in use they could do the same. One great advantage is that low frequency signals can travel over long distances, so the coverage potential is massive, and they penetrate buildings and other natural barriers much more efficiently than other frequencies currently in use.

Here in the US many telecommunications carriers have been complaining that there is not enough bandwidth for them to keep up with consumer demand, and so the Federal Communications Commission has been trying to free up spectrum space. They approved rules in 2010 about the use of such white spaces and databases have been set up to monitor spectrum use to see how it can be improved. Google are one of the leaders in this database organization too, as this article explains.

Experiments are being conducted here too, with this article describing how the system is being used in a small North Carolina town, and results reported in the UK claim that the system can deliver 16 megabits per second over 10KM (see Christopher’s comments on this related article for an explanation of what that means), but this is a delivery similar to what we know as 4G.

Potentially great improvements in coverage might be just round the corner through a more efficient use of an already existing infrastructure.