Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×

Submission + - MIT's robotic cheetah no longer needs a leash (cnet.com)

walterbyrd writes: MIT's big-cat-inspired robot has gotten some serious upgrades as researchers continue to improve its skills. It's come a long way since its first treadmill test, during which it was tethered up. It can now run free, and a new algorithm allows it to bound in a peppy manner while navigating the terrain of a grass lawn.

Comment Re:Poor comparison... (Score 4, Informative) 59

A "Carrington-level" event nowadays would most likely be much less disruptive, as back then all the early radio and spark gap stuff was well under 50 MHz, which is where almost all of the natural noise winds up in the spectrum. Ever notice, for example you can hear your shaver motor on an AM radio but not an FM one. This is not due to AM vs. FM, (well, it is a little) but mostly due to the fact that AM is about 1 MHz and FM is about 100 MHz, well above the "static line" around 50 MHz.

It would take a much stronger signal than back then to cause the same level of disruption. Not saying that can't happen, but modern radio communications are quite a bit more robust than they were back over 100 years ago.

The concern is not so much about the disruption of radio communications, but the power grid. Our society might not survive a massive, long-term (months or even years) blackout (a huge number of transformers might be destroyed all at once by the induced EMF).

Comment According to Spock . . . (Score 3, Interesting) 937

> “If this is your God, he’s not very impressive. He has so many psychological problems; he’s so insecure. He demands worship every seven days. He goes out and creates faulty humans and then blames them for his own mistakes. He’s a pretty poor excuse for a Supreme Being.” — Spock, The God Thing, by Gene Roddenberry

This quote was recently making the rounds on Facebook. It’s taken from a newly discovered script, what The Complete Star Trek Library is calling “Gene Roddenberry’s Last Star Trek Novel.” Roddenberry was an ardent atheist and it appears he was constantly working his critique of religion into the series. The God Thing is a testimony to Roddenberry’s atheistic aims.

http://mikeduran.com/2012/08/star-treks-loopy-deity/

Comment Re:Maybe first you can stop pigeon-holing people.. (Score 3, Insightful) 937

> It's like when atheists are dumb enough to treat all Christians alike, or Muslims, ...

No it's not like that at all.

When you join an organization that espouses certain values, then you must agree with those values. Otherwise why would you join?

For example, if somebody joins the KKK, it would hardly be wrong to think that person is a racist. And if somebody joined NAMBLA, then it is fair to believe that person believes it is okay to molest children.

Atheists have no set ideology. For that matter, theists may not either - unless they belong to some organization that has some specified sort of ideology.

But if you are Christian, Muslim, whatever; then you are claiming that you ascribe to those values.

Comment Re:Atheism offers no values - you have to add them (Score 0) 937

> And of course the excesses of the church pale into insignificance compared with the horrors of Stalin and Mao

Which is "the church?" All religions? Christianity? Catholicism?

Let's remember the Nazis were very Christian, and the holocaust would not have happened without Christianity.

Christianity was also used to justify slavery, and witch burning, among other things.

I have read that throughout Islamic history, about 270 million people were killed for the cause of Islam.

Furthermore, Stalin, and Mao; were not motivated by any sort atheist ideology. If there is such a thing as "atheist ideology."

Comment Re:Great idea! Let's alienate Science even more! (Score 3, Insightful) 937

> The problem is even atheists still feel a need to believe in *something*

Nope.

> with varying details of what they consider "good".

By that you mean: bigotry, misogyny, blood sacrifice, slavery, and war. Also severe punishment for free speech, not worshiping as told. And of course, must give loads of money to those humans who claim to have a direct connection to "god." Finally, do not use reason, do not think critically, just accept everything on faith - that is the ultimate good.

Comment Why is science to blame for the holocaust? (Score 1) 937

From the article:

> "To which one might reply: Science is all those things. Between holocausts!"

My understanding is: without religion, there would have been no holocaust.

German Christians hated Jews. Hitler was a product of his strongly Christian upbringing. At the time, in Germany, Jew hatred was taught in public schools.

Why on earth would you blame science, and not religion, for the holocaust?

Sci-Fi

The Future According To Stanislaw Lem 196

An anonymous reader writes "The Paris Review has an article about SF author Stanislaw Lem, explaining Lem's outlook on the future and his expectations for technological advancement. Lem tended toward a view that technology would infect and eventually supplant biological evolution. But he also suggested an interesting explanation for why we haven't detected alien civilizations: "Perhaps ... they are so taken up with perfecting their own organisms that they've abandoned space exploration entirely. According to a similar hypothesis, such beings are invisible because technological ease has resulted in a 'Second Stone Age' of 'universal illiteracy and idleness.' When everyone's needs are perfectly met, it 'would be hard, indeed, to find one individual who would choose as his life's work the signaling, on a cosmic scale, of how he was getting along.' Rather than constructing Dyson Spheres, Lem suggests, advanced civilizations are more likely to spend their time getting high.""

Comment Re:No, not really (Score 4, Informative) 113

You still need very pure water or you poison the process. Where's that water coming from? How do you collect the gaseous hydrogen? You still need to liquify it and all the emrittlement and cryogenic issues are still there.

Even if hydrogen gas is free, it makes no sense as an energy carrier for cars.

They don't collect the gaseous hydrogen in the electrolyzer; they soak it up with a "liquid sponge" ("a recyclable redox mediator (silicotungstic acid) " according to the article's abstract. In principle at least, hydrogen could be stored and transported in this form (a liquid sponge soaked with hydrogen).; the hydrogen can be catalytically released (wrung out of the liquid sponge) when needed. Whether such a system could be built with a practical size, weight, and cost for use in vehicles is another matter.

Submission + - Software patents are crumbling, thanks to the Supreme Court (vox.com)

walterbyrd writes: This doesn't necessarily mean that all software patents are in danger — these are mostly patents that are particularly vulnerable to challenge under the new Alice precedent. But it does mean that the pendulum of patent law is now clearly swinging in an anti-patent direction. Every time a patent gets invalidated, it strengthens the bargaining position of every defendant facing a lawsuit from a patent troll.

Comment Head for the hills, or the coast, or... (Score 1) 151

CMEs usually lead to an enhanced chance of aurora, so if I'm in a suitable location it's more a case of getting the camera gear out and heading off to somewhere scenic and away from any major source of light pollution. Keep watching the skies, we could be in for something spectacular if it hits us head on.

Slashdot Top Deals

Anyone can make an omelet with eggs. The trick is to make one with none.

Working...