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Two Google Engineers Say Renewables Can't Cure Climate Change

ceoyoyo Re:Environmentalists is why we still pump carbon (513 comments)

Going all nuclear today WOULD solve the problem. What they're saying is that, due to lots of factors other than the price of renewables, we can't implement them on a large enough scale quickly enough.

yesterday
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"Advanced Life Support" Ambulances May Lead To More Deaths

ceoyoyo Re:Training? (107 comments)

I have a good friend who did EMT training. I think it was a two year certificate program. But in our area, to actually work in an ambulance, especially ALS, you essentially have to be a paramedic, which is a four to five year degree program. Note that med school is also a four to five year degree program. MDs then get specialized training for various lengths of time in residency programs, but they also have a much broader focus than paramedics.

yesterday
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Two Google Engineers Say Renewables Can't Cure Climate Change

ceoyoyo Re:We need a *social* change (513 comments)

GDP is funny. Most formulas for it include not only production but also other economic activity. So production of steel and food and iPhones counts, but so does the activity of the PHB and the ad agency making popups. We certainly would be poorer if reduced working hours led to a decrease in primary production, but would we be if the service industry was reduced? Fewer investment bankers, fund managers, ad execs, and those people who stand in department stores spraying perfume in your face?

Western economies add mostly service industry activity as they grow. I suspect that this is really just a combination of the idea that we all have to have jobs and work forty plus hours a week and increasing wealth. Make work jobs.

yesterday
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"Advanced Life Support" Ambulances May Lead To More Deaths

ceoyoyo Re:Training? (107 comments)

There are lots of other factors as well. Two guys in the back of a van can't work as effectively as an ER team with as many people and as much space as needed. If it's a choice between maintaining continuous chest compressions and figuring out whether the patient's blood potassium is too low or high, which do you do? In a hospital you can do both at the same time. In an ambulance, particularly one that's moving, probably not.

The recommendations for advanced life support changed in 2010 to suggest that the chest compressions are actually more important.

yesterday
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:By the same logic (327 comments)

No, you can prove very non-trivial programs will halt. There are entire languages that are restricted in such a way that ALL programs you can write in them are guaranteed to halt. Realtime operating systems even guarantee things are completed in a particular amount of time.

Running a program to a deadline is not cheating. It's a technique that's used all the time. It's also used in real life, by the way. The precise example problem in the article is solved in real-world justice systems by requiring a speedy trial. If you can't prove the evil programmer guilty within a reasonable amount of time, she is not guilty by default.

yesterday
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It's Not Developers Slowing Things Down, It's the Process

ceoyoyo Re:Constant Planning (185 comments)

Sounds like a typical manager, everything more complicated than it needs to be in order to sound clever. My grade four teacher told us "prior planning prevents pretty poor performance." You could cut that down to "think first."

4 days ago
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Lessons Learned From Google's Green Energy Bust

ceoyoyo Re:Google is not unique (219 comments)

The difference is, the corporate labs had lots of smart people and a funding parent company that were interested in the field they were researching. Bell was interested in solid state dohickeys to help them make a better telephone system.

Google is a web advertising company. With enough motivation and money they could hire alternative energy engineers and set up a productive lab and potentially make some breakthroughs, but not in a few years. And since it's Google, who can't even muster up the motivation to keep a web advertising project going more than a few years, they quit.

5 days ago
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"Barbie: I Can Be a Computer Engineer" Pulled From Amazon

ceoyoyo Re:From Experience (554 comments)

So a startup CEO then.

5 days ago
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Bicycle Bottle System Condenses Humidity From Air Into Drinkable Water

ceoyoyo Re:I have a revolutionary idea.... (167 comments)

"Do you think that a place like, say, Haiti, which has sun, humidity and wind aplenty, but lots of problems getting sanity drinking water couldn't use this technology?"

Yes. Using a Peltier element to essentially produce a solar powered solid state air conditioner is a really inefficient way of purifying water. For small scale desalination or purification where distillation is necessary, a solar still works much better and can be made with much cheaper and available materials. Often you can make one out of scavenged stuff.

about a week ago
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Bicycle Bottle System Condenses Humidity From Air Into Drinkable Water

ceoyoyo Re:"Industrial design student" (167 comments)

Note that it's an award for industrial design, which is an arts (not engineering) program. The inventor is a student at an applied arts school.

Does that change your assessment?

about a week ago
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Bicycle Bottle System Condenses Humidity From Air Into Drinkable Water

ceoyoyo Re:Hmmm ... (167 comments)

It's because for most places you can make a more efficient, cheaper and more easily scalable version with a bucket, some plastic and a rock. The only drawback is that it's harder to mount on a bike.

about a week ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:Another case of Specific vs General case confus (327 comments)

Their specific scenario is solved by western court systems in the same way: if you cannot prove, in a reasonable amount of time, that the potentially evil programmer really did write malicious code then you must let her go.

about a week ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:Misunderstanding the halting problem (327 comments)

These things are generally implemented very simply, in hardware. There is no memory controller, or memory, or OS. If you want to be really sure, the algorithm is implemented as a mechanical device.

Yes, even those can fail. But hardware failure is a separate problem from software failure.

about a week ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:Cognitive dissonance (327 comments)

A Turing machine isn't a finite state machine either.

about a week ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:Bad Headline as Usual (327 comments)

You both read it wrong. It says that you can't build a robot that can decide whether any other possible robot will always make the right decision. And by the way, all the robots have infinite inputs, infinite memory and infinite time to decide.

about a week ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:It's just wrong (327 comments)

The other part of the halting problem proof is "Turing machine." Your phrase "8 state Turing machine" is nonsensical, because a Turing machine, by definition, is infinite in all directions.

The halting problem can be solved for a finite (in either memory or running time) pseudo-Turing machine, as you point out. Even that's not necessary, as the GP pointed out.

about a week ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:Impossible to build purely evil robots? (327 comments)

Not quite. The proof says that there is not way to build an automated process that will determine that the source code of and and all robots works correctly. It's perfectly possible to prove that particular examples do work as expected.

about a week ago
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Halting Problem Proves That Lethal Robots Cannot Correctly Decide To Kill Humans

ceoyoyo Re:By the same logic (327 comments)

The halting problem, or rather Turing's proof that it's unsolvable, usually doesn't get specified quite completely, certainly not in pop sci articles.

Turing showed that there is no general solution to determine whether a program running on a Turing machine will terminate or not. Seems simple. Until you look at the details.

"General solution" means that you have to write a program that can determine whether ANY program will terminate. "Turing machine" means that the machine has infinite memory and can take infinite time.

So the proof basically says that it is not possible to write a program (that itself has to run on a Turing machine) that can determine whether any possible program, running on an impossible infinite computer, will terminate, given infinite running time.

That doesn't really connect with practical applications very well. It's perfectly possible to prove that a particular program will halt. It's also perfectly possible to determine whether any given program will finish or not in a particular amount of time.

The authors of the paper come up with a dilemma involving keeping a possibly evil programmer in jail. The real world solution is that if you can't prove evil intent within some specified amount of time, you release the programmer.

about a week ago
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Sweden Considers Adding "Sexism" Ratings To Video Games

ceoyoyo Re:Horribly sexist ! (641 comments)

I'm sure someone says that, and calls it feminism, but it's pretty clearly ridiculous. The male supplement racket is a multi-billion dollar a year business and female obesity is increasing, just like it is for men.

about a week ago

Submissions

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Martian Volcanoes May Not Be Extinct

ceoyoyo ceoyoyo writes  |  more than 7 years ago

ceoyoyo writes "The Tharsis volcanoes on Mars show evidence they may have erupted within the last two million years and may still be dormant, not extinct. The three volcanoes also show evidence of erupting in a chain, much like the Hawaiian islands, with the southernmost showing the oldest lava flows and the northernmost the youngest. On Earth chains of volcanoes are produced when the crust moves over a magma plume in the mantle. On Mars, since there is no tectonic activity, the researchers theorized that the magma plumes themselves move under the fixed crust."
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