Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
×

Comment Re:Gamechanger (Score 1) 514

Plus those installations can provide a shedload of REACTIVE power, very, very useful for grid stabilization.

They can, but are they? I have only seen residential solar which reacted to grid overload/underload situations (i.e. situations which should never occur in an ideal world), not any which reacted to constant requirements for reactive power. Do you know of any which take part in the standard grid stabilization in normal use, outside of grid emergencies?

Comment Re:Gamechanger (Score 1) 514

When electricity is cheap, it is because the marginal cost of producing it is low. The marginal cost is low because it does not take very much extra fuel to produce it. In other words, when electricity is cheap, its production is also less environmentally harmful. (This only holds as long as the power stations are unchanged of course.)

The Economist regularly gets this wrong by saying that electric cars are polluting more if they charge at night rather than during the day. They base this on the average pollution per kWh being higher at night. However, the average pollution does not matter. It is the marginal pollution which matters, and that is very low at night. This is really the kind of thing that economists should be specializing in getting right; I do not understand how you can be an economist and get it wrong.

Comment Re:This again? (Score -1, Troll) 480

Spring-And-Loop Theory predicts that its version of "virtual particle pairs" -- dubbed springs -- cause electrons to move at one-tenth of the speed of light.

100 years ago, those "virtual particle pairs" were called the ether. The ether doesn't go away, just because SR said it wasn't there and the M-M expt couldn't detect it.

"e/m", in Spring-And-Loop Theory, is "spring bumps". In the NASA expt., they are firing microwave energy (i.e. spring bumps) at "space" (i.e. springs). The springs have nowhere to go, since every Planck-unit of the Universe is full of them. So they have no choice but to push back. Immovable spring objects vs irresistable bump force.

Mod stalkers: this would be where you down-mod this comment, typically with the non-meta-moderatable "overrated" mod, usually doing this several days after the thread's start so that few will notice or have a chance to reverse your handiwork.

Comment Depends (Score 2) 76

For the "many eyes" to work, there are quite few requirement.

Yes, being opensource is a requirement, but is not the single only requirement.

The code need to be actually readable and to attract users motivated to check it.
That wasn't the case. OpenSSL's code is known to be really crappy, with lots of bad decisions inside. Any coder trying to review it will have their eyes starting to bleed.
It doesn't attract people who might review it. It only attracts the kind of people who just want to quickly hack a new feature and slap it on the top, without having a look at what's running underneath.

The code need also to be reasonably accessible to code review tools.
Lots of reviewers don't painfully check every single last line of code by hand. Some use tools to do controls. OpenSSL has had such a series of bad decision in the past, that the resulting piece of neightmare is resistant to some types of analysis.

Comment Tool assisted review (Score 1) 76

The problem is that some of the design decision behind openssl are so aweful that some of the code review tools just don't work well to detect bug.

Hearthbleed has specifically resisted to valgrind, because the geniuses behind openssl had implemented they own memory management replacement functions in a way that is resistant to memory analysis.
The memory porblem went undetected.

Comment Re:Also, stop supporting sites with poor encryptio (Score 1) 324

You should find another bank.

Yep. There are plenty of banks to choose from that - whatever their other flaws - at least take security seriously. If your bank can't or won't lock down their website, then you already know that they're negligent in at least one area. What else are they neglecting?

Comment Re:Wait a minute... (Score 1) 324

I don't think it's extreme at all. I think we're past the point that's it's socially reasonable or responsible not to encrypt all traffic by default.

Even if you're 100% OK with visitors to your site being snooped on, consider that adding to the amount of crypto in use worldwide makes it hard for repressive governments to tell what their citizens are doing online. Maybe your site would be the straw that broke the Great Firewall's back and lets some kid read uncensored news.

Comment Re:Seems he has more of a clue (Score 1) 703

We might cut the future increases, but cutting to half of current levels? I don't see that happening, you'd need FAR more than a carbon tax to make that happen.

The modest carbon tax in British Columbia has cut emissions in that province by 16% while emissions grew in the rest of Canada by 3% (a rate that likely would have grown higher still if Ontario and Quebec weren't also working to reduce emissions). A carbon tax, by itself, might not reach a 50% reduction, but it could spur changes in consumer behavior. For instance, now that gas prices have fallen again, sales of SUVs are increasing again after declining during our last period of high prices. That's probably a missed opportunity to reduce emissions.

Without a carbon tax, the United States is aiming at (and currently looks like it will hit) a target of 20% below 2005 levels. If a carbon tax had been added to the policy, the United States might have been able to hit 40% below 2005 levels, which is not that far from 50%.

Comment Re: I like this guy but... (Score 2) 438

The problem arises when 95% of the population is fooled into voting for a single party with two wings, both of which are working against them.

Frankly, I doubt you understand politics. Despite your claims the parties are different entities although with very similar goals (power and control). In some areas, the policies of the parties are indistinguishable because they are appealing to same people for funding and trying to get same people to vote for them. Both parties need a majority of votes to win so they are by necessity fighting over the same people in the American center.

Frankly, in the current American system, large differences are not sustainable because if the difference loses votes, it will be abandoned and if it gains votes it will be copied or mirrored by the other party. The American system, whether by design or by accident, generates nearly identical parties.

It's not that the parties are the same organization, because they clearly are not, it's that the American political system is so poorly designed that serving the people brings few benefits when compared to playing internal politics for advantages and begging money from sponsors to fund election campagins.

Slashdot Top Deals

An authority is a person who can tell you more about something than you really care to know.

Working...