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'Thermoelectrics' Could One Day Power Cars

DerekLyons Re:Not so fast, Thermodynamic laws are pesky thing (173 comments)

Any energy you manage to get, will be lost someplace else because you put these devices in the heat flow.

You sir, are ignorant as fuck. It's a sad comment on the state of affairs that a clueless bullshit comment like your could be moderated informative.

We've been extracting energy from waste heat, without incurring extra losses, for over a century now - it's been a standard practice in steam engineering since the 1800's. In the same way, if you put these devices in an IC engine's exhaust you can recover energy that would otherwise simply be vented into the atmosphere without incurring any losses "someplace else".
 

Don't let them fool you with all this "waste heat" garbage, at least until you understand the Thermodynamic laws that govern all this and can explain what a heat engine is.

Before cautioning others to educate themselves, first pull your head out of your own ass and educate yourself.

3 days ago
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How Does Heartbleed Alter the 'Open Source Is Safer' Discussion?

DerekLyons Re:Eyeballs did not find bug ... (580 comments)

Straw man.

Sadly, straw men dominate this discussion. Thank you for seeing them for what they are.

4 days ago
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Ubisoft Hands Out Nexus 7 Tablets At a Game's Press Event

DerekLyons This news how? (43 comments)

From TFS: "You can see how it would be viewed with skepticism; after all, these are the individuals who will give Watch Dogs a review score, which many gamers rely on to help them make a purchasing decision."

Come on, we're all adults here. We all know the industry gives perks to reviewers in exchange for favorable reviews. This is just more blatant than most.

4 days ago
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How Does Heartbleed Alter the 'Open Source Is Safer' Discussion?

DerekLyons Re:Wat? (580 comments)

"The problem here is that people have been using the argument that Open Source is better because these issues can't happen "because" of the visibility."

No, just no. No one with any sort of a clue ever argued these issues cannot happen with Free Software.

No, they haven't made that claim in so many words. But they've sure as hell implied it for years now. That's the whole line of thought that Raymond's statement (quoted in TFS) is based on.

The amount of backpedaling and smoke blowing in this discussion awesome.

4 days ago
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This 1981 BYTE Magazine Cover Explains Why We're So Bad At Tech Predictions

DerekLyons Re:Most unlikely technology in 1981: Handheld GPS (275 comments)

That's the OP's point - you're missing my point, which is that it's not really so unfathomable at all. By 1981, we'd already in less than a decade gone from pocket calculators being expensive rarities to being practically given away in breakfast cereal. LORAN was already widely available in a compact box. Etc... etc... By 1981, the accelerating pace of technology was already clearly visible to anyone who was looking. (Which I was at the time.)

What I missed/didn't grasp the full import of is that between 1981 (the year of my high school graduation) and 1991 (the year of Desert Shield/Storm) GPS went from being a highly classified piece of military hardware to a handheld commercial unit. There were actually more units in the civilian world than in the Army. (Folks were actually buying handheld GPS units at sporting goods stores and sending them to soldiers in the field because there was a shortage of officially available and issued GPS units!) But given the rapid advance of IC's into the civilian/commercial world, I shouldn't have been surprised at all. (OTOH, the full story of the DOD's role in developing IC's wasn't fully known/grasped at the time.)

4 days ago
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This 1981 BYTE Magazine Cover Explains Why We're So Bad At Tech Predictions

DerekLyons Re:Most unlikely technology in 1981: Handheld GPS (275 comments)

I always thought the most unlikely technological development in my lifetime was the handheld GPS device. It would be "most unlikely" because it required tremendous, simultaneous, and largely unforeseen advances in several different technologies, each of which was hard to predict in 1981.

Yes... and no. In 1981, the pieces and precursors of pretty much everything on your list was already in place. Very little of it was available down at Radio Shack, granted, but much of it was already in use (at a minimum) by the military.

4 days ago
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This 1981 BYTE Magazine Cover Explains Why We're So Bad At Tech Predictions

DerekLyons Re:Sci-Fi? (275 comments)

Especially when you consider, science has a hard time predicting future trends and technologies, yet Science Fiction seems to have been fairly accurate in predicting, if not outright influencing, future technological trends.

Certainly, if you cherry pick the hell out of the (tens of?) thousands of "predictions" made across the last century or so... science fiction seems remarkably prescient. In reality, the picture is much bleaker. In reality, science fiction is not much better at predicting the future than a million monkeys pounding away on typewriters.

4 days ago
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Ask Slashdot: Are You Apocalypse-Useful?

DerekLyons Are you really that fucking stupid? (732 comments)

Yes, there's scrap from cars. Duh. Less and less each year though - most cars are recycled, and the steel quantity in each individual vehicle is dropping with each model year to save weight.

But you still need someone to strip the car and transport the material to the forge site. You still need fuel for the forge. Etc... etc... Here in the real world, that's called infrastructure. I have no idea what it's called inside that piece of rotted shit you call a brain.

about a week ago
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Ask Slashdot: Are You Apocalypse-Useful?

DerekLyons Re:Blacksmithing (732 comments)

A decent blacksmith needs nothing but raw materials.

Think real hard jackass - where do the raw materials comes from? What do you think infrastructure is? And yes, I've met real blacksmiths and seen them at work - and very, very few of them work from scratch. (And if you think making decent quality charcoal is easy... I've got a bridge to sell you.)

Graduating from apprenticeship requires actually making your own tools from raw materials.

Assuming they graduated from an apprenticeship program in the first place. The individual to whom I replied had merely taken classes.

about a week ago
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Ask Slashdot: Are You Apocalypse-Useful?

DerekLyons Re:Blacksmithing (732 comments)

Taking a class in x isn't the same as being x. Not to mention, blacksmiths need fairly significant infrastructure behind to be of any kind of use.

about a week ago
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Ask Slashdot: Are You Apocalypse-Useful?

DerekLyons Re:Problem solving (732 comments)

I find that even though the specifics are different, the fundamental skill is the same..problem solving

The steps are the same..clearly identify the problem, look at the tools and materials that are available, then find a solution using what you have to work with

Well, if "what you have to work with" isn't "the skill to use the tools and materials available", then your "fundamental skill" is fundamentally fucking useless. (Not to mention that someone who lacks the "the skill to use the tools and materials available" isn't all likely to have the information needed to find a solution in the first place.) The real world isn't an MBA case study. You need actual skills.

about a week ago
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Navy Debuts New Railgun That Launches Shells at Mach 7

DerekLyons Re:And the advantage of this is? (630 comments)

In ballistic mode, it only fine tunes the trajectory - you can't simply 'fire it in the general direction' and fix things up later. You already have to be in the basket, which isn't that large. The basket is larger for glide mode, but it's still not "in the general direction".

(Hint: Quoting from Wikipedia when you don't know jack shit doesn't make you look intelligent when you're replying to someone who does know what he's talking about.)

about two weeks ago
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Navy Debuts New Railgun That Launches Shells at Mach 7

DerekLyons Re:IANA Physicist, So... (630 comments)

Instead, you have to store enough energy to fire the thing. I assure you - punching a hole in a capacitor bank charged up to fire one of these will not merely result in an 'arc flash' hazard...

A capacitor bank can be placed inside armor, or at least inside an enclosed volume, with minimal interfaces - historically, the access needed to transfer ammunition into or out of a magazine has been it's Achilles heel.

about two weeks ago
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Navy Debuts New Railgun That Launches Shells at Mach 7

DerekLyons Re:And the advantage of this is? (630 comments)

Imagine a shell that can adjust it's flight path, even slightly, which means you can fire in the general direction you want, then fine tune the aim in flight. (I assume they don't do that now..)

They don't, and even a railgun projectile probably won't either - because the force required to effect a significant change in trajectory (especially in azimuth) is simply too great.

about two weeks ago
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Navy Debuts New Railgun That Launches Shells at Mach 7

DerekLyons Re:IANA Physicist, So... (630 comments)

It's not entirely clear what the advantage of a railgun would be

It means you don't have carry propellant for the shells - propellant that's volatile and dangerous to handle and store. (Historically, the vast majority of Naval ordinance casualties are related to the propellant, not the payload.) You reduce the size, weight, and complexity of the handling path as the size and weight of the round decreases. You also reduce the size of the magazines. (Yes, some of the saved space and weight will be spent on whatever provides the energy for the gun.)

about two weeks ago
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Meet the Diehards Who Refuse To Move On From Windows XP

DerekLyons Re:Hardware requirements (641 comments)

Everyone running old specfialized hardware which is not compatible with windows 7 or later feel the pain of the XP end of life.

That is not the pain of XP EoL, it is the self inflicted torture by those who refuse to use free and open source software.

Bullshit. The free and open source software frequently simply doesn't exist for specialized hardware. Period. Not to mention, I find it very unlikely that free and open source will long continue to support XP - Firefox, for example, has already dropped support for everything prior to SP3.

F/OSS is not the universal panacea it's fanboy's would like to have us believe.

about two weeks ago
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Should Microsoft Be Required To Extend Support For Windows XP?

DerekLyons Re:Nah just have copyright last for 14 years (650 comments)

The copyright running out on XP wouldn't solve the problem of a lack of support.

Precisely this, support only happens where there is money or self interest in doing so. And the kind of people who've been coasting along on Microsoft's free patches aren't going to suddenly start paying Bob's Computer Support and Lawn Maintenance for patches just because the code was released into the public domain.

about two weeks ago
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How the Internet Is Taking Away America's Religion

DerekLyons Re:unfiltered information will make people THINK! (1037 comments)

access to unfiltered information will make people THINK!

Bullshit. Even a single day of reading /. will rapidly disabuse anyone with any intelligence of that notion.

about two weeks ago

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