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Comments

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FarmBot: an Open Source Automated Farming Machine

SoftwareArtist Bad summary but cool project (133 comments)

Don't be put off by the clueless submitter. This is actually a really cool project that goes way beyond existing types of automation. This quote, for example, gives a sense of the kinds of things they're trying to enable:

The tremendous potential that FarmBot creates, allows for many new methods of farming, including the ability to create “polycrops” which mix and match different crops, unlike methods seen on typical farms.... Traditionally this has been impossible, as each different plant species requires different care techniques. For example, some crops require more water than others, while some crops require water at their stalk, rather than at their base. Some plants require more or different types of fertilizers than others. FarmBot’s software makes this process extremely simple, as each plant can virtually be programmed for their individual needs.

2 days ago
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T-Mobile To Throttle Customers Who Use Unlimited LTE Data For Torrents/P2P

SoftwareArtist Re:Uh? (147 comments)

On a similar note, I don't know that T-Mobile's music streaming policy is terribly unfair, since they're whitelisting all the major streaming music providers. If they made Pandora free while Slacker had to pay, that's not 'net neutral'. Since everyone who streams audio is included, it's a blurry area for net neutrality.

Here's one they don't include: totallyweirdsounds.com (all Tuvan throat singing, all the time!) Never heard of it? Of course not, I just made it up. But suppose I wanted to start that site. Millions of T-Mobile users would say, "If I use your service, it'll eat through my data cap, but if I get my Tuvan throat singing from Spotify it doesn't." I'd be at a huge disadvantage.

Net neutrality is about providing a level playing field. Not just for established companies, but for everyone. Maybe T-Mobile is doing this with good intentions, but they're creating a barrier to any new music streaming service that comes along. Besides, if they want to raise their customers' data caps (which is effectively what they're doing), why not let customers use that data however they want?

And it's not like they even have all the major services. Google Play Music? Nope. TuneIn? Nope. SoundCloud? Nope. Those, perhaps by coincidence, are precisely the services I stream music from most often.

about a week ago
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Auralux Release For Browsers Shows Emscripten Is Reaching Indie Devs

SoftwareArtist Just because you can do something (44 comments)

Congratulations, you're being a troll. They managed to take their existing app written for a completely different platform, and port it to the web in a way that runs flawlessly on my four year old laptop. Without having to rewrite the whole thing by hand in Javascript. I'd call that a big win, and a really cool achievement.

about a week ago
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Ask Slashdot: "Real" Computer Scientists vs. Modern Curriculum?

SoftwareArtist Re:Computer Science (637 comments)

Exactly! Computer Science != Software Engineering. Yes, a software engineer needs a solid knowledge of computer science, just as an electrical engineer needs a solid knowledge of physics. But a degree in CS doesn't prepare you to be a software engineer any more than a degree in physics prepares you to be an electrical engineer.

In my experience, people who get to college and decide, "Computer science seems like a good career, so I guess I'll major in that," tend to become bad programmers. People who major in CS because they love computers and have been programming for fun since they were 12 tend to become good programmers. They're motivated to learn on their own all the things their CS classes don't cover, and likely have already learned a lot of them before they even get to college.

There are some schools that actually offer degrees in Software Engineering. But I don't think I've ever known someone with one of those degrees, so I don't know whether they do a better job of training good programmers.

about two weeks ago
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The Social Laboratory

SoftwareArtist Re:Welcome to the Privacy Free Zone (79 comments)

Everyone I've known from Singapore has been very clear about this: they did not "consciously choose" to surrender civil liberties. They were never given any choice in the matter. They were very unhappy about the lack of civil liberties there and wanted it to change.

Perhaps the people I've known were not representative of Singapore in general. But even so, it's manifestly absurd to claim they consciously chose something they have never been given any choice about and have no power to change.

about three weeks ago
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NASA Tests Microwave Space Drive

SoftwareArtist Re:Carry the one (201 comments)

2. No one is claiming this device is a "free energy machine".

Skeptics are, because all reactionless drives are free energy machines.

That's doublespeak. No one who believes in it claims it's a free energy machine. Ok, you are free to announce, "It's a free energy machine, therefore it can't exist!". But since you don't have any evidence to support your claim, that's meaningless. Either it works or it doesn't. If it does work, it almost certainly is not a free energy machine. No one has presented any evidence to indicate it doesn't conserve energy. If you make that claim anyway, it just shows you're making claims that aren't based on evidence. It tells us nothing about whether this device actually works or not.

It can be hard to get your head around, you may want to actually do the maths to convince yourself.

The only thing that's hard to get your head around is that you just made two assumptions that directly contradict each other. Conservation of momentum follows from Newton's laws of motion. If you assume momentum is not conserved, you aren't allowed to use Newton's laws anymore. But that's what you just did. You first assumed the existence of a phenomenon that violates Newton's laws, and then immediately started applying Newton's laws as if they were valid. If you make two assumptions that contradict each other, all your conclusions are invalid.

3. No one is claiming this device is "reactionless".

Skeptics are.

Same as above. Or to summarize:

Scientists: "Experiments indicate this device seems to work. We're not absolutely convinced yet, and we don't completely understand the mechanism. But if it really does work, we're pretty darn sure it must conserve energy and momentum."

You: "This device doesn't conserve energy or momentum. (Because, well, I just know it doesn't, even though I don't have any evidence to prove it.) Therefore it can't work."

Space doesn't work that way.

Say the device interacts with virtual particles, a la Casimir Effect. The physics of virtual particles is not analogous to regular particles. The net velocity of virtual particles is zero, regardless of the velocity of the EmDrive.

Now you're just making things up. There is no difference between "virtual" particles and "real" particles. They obey exactly the same physics. If a particle/antiparticle pair is created out of the vacuum and then is annihilated without ever being observed, we call them "virtual" particles. But while they exist, they can interact with other particles, and they interact in precisely the same way other particles do. Furthermore, that interaction can sometimes prevent them from annihilating each other, in which case we say they have become "real" particles that were created out of the vacuum by the energy of the interaction.

Actually, the whole concept of "virtual particles" is just an artifact of the mathematics: we don't know how to describe the true vacuum state, so we use perturbation theory to write an infinite series describing how it differs from another state we do know how to describe. And we call the terms in that infinite series "particles".

All of which is really completely irrelevant to the question at hand. A particle/antiparticle pair initially has zero momentum, but they absolutely can interact with other particles, and that interaction can impart momentum to them.

about three weeks ago
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NASA Tests Microwave Space Drive

SoftwareArtist Re:Carry the one (201 comments)

Wow, that was wrong in so many ways.

1. There is no such thing as a "free energy machine".

2. No one is claiming this device is a "free energy machine". You have to put energy in as electricity, and you don't get more energy out than you put in.

3. No one is claiming this device is "reactionless". There's ongoing discussion about the exact mechanism (assuming it actually works). They suggest it may be pushing against space itself, somewhat analogously to how a swimmer pushes against the water they're swimming through. But if it actually does work, it almost certainly conserves momentum.

4. In any case, conservation of momentum and conservation of energy are independent conservation laws that come from different symmetries of the universe. If one turned out to be wrong, that wouldn't automatically mean the other was wrong too.

about three weeks ago
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US Army To Transport American Ebola Victim To Atlanta Hospital From Liberia

SoftwareArtist Vaccine is coming (409 comments)

Only about 10% of drugs that enter clinical trials end up getting approved. "effective in monkeys" != "effective in humans".

about three weeks ago
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US Army To Transport American Ebola Victim To Atlanta Hospital From Liberia

SoftwareArtist Thanks for the pointless scaremongering (409 comments)

The only novel thing is that they're bringing a highly contagious patient on an airplane half way around the world. If you think that's no more risky than bringing an inert, freeze dried sample in a tightly sealed container, well, trust me, it is.

Of course, I'm sure nothing could possibly go wrong. Unless the plane crashes. Or experiences mechanical problems and has to make an unplanned landing. Or any of lots of other things that could go wrong, does.

about three weeks ago
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NASA Tests Microwave Space Drive

SoftwareArtist Carry the one (201 comments)

Unfortunately, even though you wouldn't have to supply propellant, you would still need to supply the energy to accelerate it. After accelerating for one year, your potato's kinetic energy is 1.8e12 Joules. That's a lot of energy. Initially you can stick a solar panel on it to power the drive, but once you're out of the inner solar system that won't work any more.

about three weeks ago
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Google's Mapping Contest Draws Ire From Indian Government

SoftwareArtist Re:How much more? (96 comments)

No, we didn't.

Prior to the first gulf war (the one in the early 90s), Iraq had a chemical weapons program. After the war, that was shut down and most of their stocks destroyed. When the inspectors came through after the second gulf war (the one in the early 2000s), they came across old shells on which they found residue of chemical weapons, indicating that a decade earlier they had once contained chemical weapons. They found no evidence that Iraq had actually restarted its chemical weapons program, or had any significant stock of chemical weapons.

If you claim they found anything more than that, please provide a citation.

about three weeks ago
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For Half, Degrees In Computing, Math, Or Stats Lead To Other Jobs

SoftwareArtist So what? (174 comments)

Is this supposed to be a bad thing? Why? This post seems to imply that your entire career should be determined by your major in college. Thank goodness that isn't true. How many people really know what they want to do at age 20? Lots of people change fields several times over their careers.

about a month ago
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My most recent energy-saving bulbs last ...

SoftwareArtist Re:Incandescent will be best for the environment. (278 comments)

Hard to beat a plain glass globe with a metal wire for clean recyclable environmentally friendly materials.

The mercury released into the atmosphere by using an incandescent is more than what's released by using a CFL. Incandescents don't contain mercury, but coal does, and a lot of the world's electricity comes from burning coal. Then of course, if you recycle your CFLs instead of putting them in the garbage, that means even less mercury in the environment.

about a month ago
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Asteroid Mining Bill Introduced In Congress To Protect Private Property Rights

SoftwareArtist Re:Absurd (181 comments)

It would at least prevent another American company from challenging them. Presumably the eventual goal would be to get other countries to sign on too. Since it's likely to be several years before any actual mining takes place, there's still time to deal with that.

about a month ago
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Match.com, Mensa Create Dating Site For Geniuses

SoftwareArtist Mensa is for wannabes (561 comments)

Seriously. If there is one thing most smart people have in common, it's that they are not in Mensa.

I went to an Ivy League college. I work in an elite university. There are two Nobel laureates on my floor. I spend my days surrounded by certifiably Very Smart People.

I don't know a single person who belongs to Mensa. Most of the people I know would laugh at the idea of joining Mensa. They don't need to join an organization to show off how smart they are. Everyone already knows they're smart. They don't need to join an organization to find other smart people. They spend their days surrounded by smart people, because they work in fields that require intelligence.

about 2 months ago
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U.S. Democrats Propose Legislation To Ban Internet Fast Lanes

SoftwareArtist Re:Market (190 comments)

You only have one ISP, but you have tons of video streaming services to choose from. This bill is about protecting competition in that latter market, not the former one. It won't create new ISPs, but it means your existing ISP can't block or downgrade service from internet companies that haven't paid it enough, or that compete with its own in-house services.

about 2 months ago
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Canadian Court Orders Google To Remove Websites From Its Global Index

SoftwareArtist Why is this Google's responsibility? (248 comments)

Google is just an index to information that's on the web. If you object to something that's on the web, go after the person who put it there and demand they remove it. I could totally understand that. But instead of demanding it be removed, they're demanding that an unrelated party stop telling anyone, anywhere in the world, that it exists. That makes no sense to me.

about 2 months ago
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Are US Hybrid Sales Peaking Already?

SoftwareArtist Huh??? (377 comments)

It seems some hybrid early adopters are now switching to plug-in hybrids or electric cars

Plug-in hybrids are hybrids. "We find that if we exclude many of the more recent models of hybrids from our analysis, the number of people buying hybrids isn't increasing."

Well duh...

about 2 months ago
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NRC Human Spaceflight Report Says NASA Strategy Can't Get Humans To Mars

SoftwareArtist Re:Why should we care? (206 comments)

(2) it gets us out of low earth orbit

But that's exactly the problem: it doesn't get us out of low earth orbit. Or rather, it gets precisely one ship out of low earth orbit, but the next one we send out will have to start all over from ground level. Sending anything from the earth's surface into space is incredibly expensive. As long as we have to rely on that, we will never be able to do more than a handful of one-off missions involving a handful of people.

I want to see humans colonizing space. I want to see permanent habitats where people live for years at a time. And not just a few people, but millions. Sending a few people to Mars doesn't get us closer to that. Developing asteroid mining facilities does get us closer.

about 3 months ago
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NRC Human Spaceflight Report Says NASA Strategy Can't Get Humans To Mars

SoftwareArtist Why should we care? (206 comments)

Why is sending humans to Mars supposed to be such a great thing? It's incredibly expensive, incredibly dangerous, and doesn't accomplish much of anything useful. Once you've sent them, the next trip will be almost as expensive as the first one.

I'm much more interested in building up a meaningful, sustainable space program. That means building up an industrial base in space. We need to be able to manufacture things in space out of raw materials that were mined in space. That's the only way that human space travel will ever be economically sustainable. So that asteroid mission sounds like exactly the right approach to be taking.

about 3 months ago

Submissions

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Petition to Reduce the Term of Copyrights

SoftwareArtist SoftwareArtist writes  |  more than 2 years ago

SoftwareArtist (1472499) writes "There's a petition up at whitehouse.gov to restore the term of copyrights back to what they were in 1976: a max of 58 years. We all love to complain about copyright law, so let's do something about it and complain to the people with power to change it. It needs 25,000 signatures by Feb. 20 to be guaranteed a response. For the Slashdot community, that should be easy! One petition won't change the law, but if we don't tell our elected representatives what we think, it will never change."

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