Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
×

Comment Re:No Leaders anywhere today... (Score 1) 348

So the question isn't really one of giving up... the question is one of choice and priority. If you have no vision and no real sense of purpose beyond enriching yourself when you occupy a position of influence, then the rot will spread and not just Scientists but many others will wither away as well.

I'm starting a new movement "The Boot Party": everyone promises to vote *against* the incumbent regardless of political party.

Government not acting in the interests of the people? Give 'em the boot!

Won't you join me?

Comment The obvious solution (Score 4, Insightful) 348

The obvious solution is to return to traditional methods: establish an independent income, then take up scientific research as a hobby.

Historically, our most notable scientists were working at day jobs or otherwise independently wealthy, and did amazing research on their own as a hobby. Some devoted entire wings of their house towards scientific research, amassing a collection of equipment (or specimens) over decades.

Henry Cavendish, of the Cavendish experiment, is one such example. The experiment was so delicate that air currents would affect the measurements, so Cavendish set up the experiment in a shed on his property and measured the results from a distance, using a telescope.

There used to be a term "Gentleman Scientist" for this, but it might more accurately be called "self-funded research".

Consider Paul Stamets as a modern example. With only an honorary doctorate, he is co-author on many papers and has proposed several medications, including treatments for cancer.

I could also nominate Robert Murray Smith to the position. His YouTube Videos are as good as many published Chemistry papers.

The benefits are obvious: You get to work on whatever you think is interesting (or fruitful), you can set your own pace, and you can draw your own line between supporting your dreams and your lifestyle: If you have a family emergency, you can pause your research and spend more money on personal welfare. It also forces you to come up with more efficient (read: less expensive) ways to work.

There's a wealth of useful equipment on eBay and other places, big expensive equipment is not out of the reach of the dedicated researcher. Ben Krasnow has three (I think) electron microscopes. I personally own a UV/VIS spectrophotometer. a microgram scale, and a Weston cell.

The idea that "research can only be done at the behest of government" or "is only associated with university" is a modern fiction. Government would *like* you to believe that everything depends on their whim and largesse, but it's not the only, nor even the best way.

Build a lab and start tinkering, or join a hackerspace. Lots of people do it. Lots of good science is done this way.

Comment Re:Are you fucking serious? Tell me you aren't! (Score 1) 198

Why the fuck are you storing the data if you don't give a damn about keeping it consistent?

There are thousands (and thousands) of cases where it is simply not reasonable to expect homogeneity in your data. Of those thousands of cases, a very large number of them not only have extremely heterogeneous data, they still need to be stored and queried. NoSQL is a useful tool in such cases.

Is it 'safe' — i.e. does it do all of the data integrity stuff we've come to associate with RDBMSes? No. Emphatically no. If you didn't code it into the right logic in the right places, you are probably worse than shit out of luck.

BUT... there are still thousands of cases where the pain of living with NoSQL far outweighs the pain (and in many cases impossibility) of living with your data inside an enterprise RDBMS.

And yes, I say this based on years of work with exactly these kinds of data sets. They were my bread and butter for a long time.

So, uh, holy fuck: Believe it.

Comment Re:When can we stop selling party balloons (Score 4, Interesting) 296

Helium balloons are a minor part of the overall picture. The overwhelming majority of uses are industrial, such as cryogenics. The problem is that they don't recover it. If you want to make a big impact on the helium consumption rate, hard drives is pretty much one of the least effective places you could focus - focus on industrial recovery.

Note that humans will never "run out" of helium. Even if we assume that space-based resource extraction becomes realistic, one can always refrigerate it out of the atmosphere. Or more accurately, refrigerate everything else out and leave the helium behind. There's only a tiny bit in the atmosphere, but for important uses it'll remain a possibility. I saw page that says that neon is $2 per liter. If you're refrigerating neon out of the atmosphere, pretty much all that's left is helium, so you're co-producing it, at a ratio of 3.5 to 1. If we assume that helium demand vastly outpaces neon demand, then the helium cost would be $7 per liter. And maybe less in mass production.

That's not really an absurd price for many uses - such as hard drives. On the other hand, it's dramatically more than today's prices at about $0.005 per liter! You're not going to be making helium blimps at $7 per liter. But if industry learns how to recapture and reuse, they should manage.

(Of course, humans probably wouldn't have to resort to helium extraction from the atmosphere for centuries, pretty much any gas coming out of the ground will be richer in helium than the air)

Comment Sounds stupid. (Score 0) 296

High capacity I can understand, but high speed is senseless. At current transistor sizes, you could easily have 10Tb of battery-backed RAM on a hard drive. You can then peel the data off the hard drive into RAM and write changes when there are enough or when a sync command is sent. RAM doesn't eat battery significantly, it only needs to maintain state and then only on dirty portions. That'll easily buy enough time to survive power outages and Windows crashes.

If everything is in RAM, access times are insignificant for always-on machines (the ones likely to need 10Tb of disk space). Since writes can be postponed until critical, the disk can spend most of the time totally powered down.

Now, if you're REALLY clever, you have twice that RAM. One lot for working space (which doesn't need battery backing) and one lot for writing to disk. This second set can be permanently defragmented, with writes designed to be compact on space and the hard drive spun to specifically provide for that.

Comment Re:Uhh yeah (Score 1) 108

Microsoft will probably implement SHA0. There's no value in SHA2 (and variants) now that SHA3 has been ratified, since SHA2 is just SHA1 with some lengthening. If SHA1 is brutally compromised, SHA2 will fall shortly after. Best to switch to NESSIE (Whirlpool) and SHA3 (something that sounds vulgar).

Having said that, SHA3 involved dubious mid-contest rule changes and spurrious rejection criteria that might well have been NSA-inspired. I'd take a very close look at the Hashing Lounge for any second or third round reject that shows greater resilience across the board (pre-image vulnerabilities, etc) as a backup in case NESSIE and SHA3 are seriously compromised.

Comment Re:Autoplay is EVIL (Score 1) 108

I'm not lying, that's the actual size, something like 420k. It may have been a bit shorter playtime, perhaps 20 seconds (I didn't time it), but still, it was quite small.

Nobody said videos on Facebook are Blu-Ray quality. But you seem to have weird concepts about how big videos need to be to be good enough quality for a web page. Just as a test, I took an original high quality full-motion video of a concert, reencoded it with ffmpeg, audio codec aac, vbr audio quality 0.5, video codec x264, preset veryslow, cf 33, resolution 512x288 (half original size), 20 seconds. File size? 420k. Of course the video from facebook was darker and quieter, so one would expect it to compress better. If we give my sample concert clip an allowable size of, say, 550k, then I can up audio quality to 0.7 and cf down to 30. Either way, the resultant clip was fine, the sort of thing you'd expect to see on a Facebook wall.

Anyway, the key point is, Facebook feeds aren't loading you down with 50 meg videos, they're little couple-hundred-k clips, the same size as animated gifs. And while I haven't measured it, they don't appear to start streaming until you scroll down to them, and look to stop after you scroll away.

Comment Re:Autoplay is EVIL (Score 1) 108

1) I just went and pulled the first anim-gif I saw off 9-gag, a fairly simple thing of Ralph Wiggum with little motion, so it should compress quite well for an animated gif. Size: just over 400k. I then pulled the first video that showed up on my Facebook feed, a 30 second full motion clip, and downloaded the entire thing (including the audio stream, full quality). Size: just over 400k.

So....?

2) Are you actually sure that it is downloading the audio stream when it does muted autoplay? Not saying that it oes or doesn't, but do you actually have evidence either way?

3) See the reply below.

There's really no argument. If you're going to allow animated gifs, you should allow autoplay videos. So that we can finally put the nail in the coffin of the awfulness that is gif by removing the last common use of it.

And FYI, 400k is not that much. Slashdot is a pretty simplistic website compared to most, and I just measured how much data is downloaded just to read the front page: 1.4M.

Comment Re:Autoplay is EVIL (Score 1, Interesting) 108

Why is it any more evil than animated GIFs? Both play automatically, neither happen with sound, and compression on x264 is *way* better than with animated gifs.

I was initially opposed to autoplay on FB, but after thinking about it, I changed my mind. We already see tons of animated stuff on web pages, and the videos from people who show up on my page about are usually things I'd find interesting (if the user posting them didn't usually post interesting things, I'd have stopped following them). There's no unexpected sounds to bug me, and the quality to size ratio versus animated gifs is, what, two orders of magnitude better?

Comment Re:No thanks (Score 3, Interesting) 326

Stallman is the crazy outlier. Where he stands, at the very edge, is exactly where we need him to be. You dont have to follow all of it, but there would be less of his ideas if he was more concerned with being central and accessible.

Just for the edification of the other readers here, which parts specifically do you feel you don't have to follow?

For the record, I know exactly which ones I would choose, but I'm interested to know what exactly you think makes Stallmann a 'crazy outlier'. Because, in my estimation, it would take a lot for someone to qualify for that kind of labeling.

I disagree with his statement that Linux distro maintainers allow non-free components because they're not sufficiently committed to freedom, but I don't think him 'crazy' for having said it. I think his blanket characterisation of profit motive as evil is too much of a generalisation, but tragically, I don't think he's entirely wrong in stating that the effects of profit motive on a lot of commercial organisations has been detrimental to our freedom - dangerously so. So yeah: same conclusion, more temperate language. That's not nearly crazy or even an outlying opinion, to my mind.

There is a point to Stallman being far out there, its so the rest of us dont have to. Let him do his thing.

I take your point, but I remind you that the same could have been said about Ghandi, or even Martin Luther King, when people were blaming him for the violence in Selma and the bombing in Birmingham.

See, the problem I have with this kind of rhetoric is that you seem willing to stand to the side at a witch-burning and say, 'Well, I would never cast a spell, but I can see why people bought magic services from her.' It's a little disingenuous, isn't it, that you would be willing to profit from someone's courage, when you're not willing to defend it?

Again, this isn't a case of 'My Free Software, Right or Wrong.' On the contrary, I'm arguing that you can quibble all you like with the arguments Stallmann makes, and the rhetoric he makes them with. But I have to ask: With an attitude like yours, how much have you actually done to promote freedom?

(Real question: I'm open to correction.)

Comment Re:The last sentence of the summary is spot on (Score 2) 66

I am so full of envy right now, with a generous side order of awe. Watch that actually brought a tear to my eye.

Well, if you can pay the airfare to Vanuatu (3 1/2 hours away from Sydney for about $US 750), only a couple hundred dollars more will get you a walking tour to the edge of the caldera. It's not really a mountain so much as a high plateau with two (yes, two) active calderas. It's a fucking amazing place, a lunar landscape emerging over the last rise after a morning spent walking through jungle. Pretty primeval.

But if you're not in an exercising mood, you can simply pay a pilot to overfly the volcano. I did this once. We were actually on our way to Pentecost island in a small twin-prop charter, when the pilot said, 'Hey, the visibility's really good - you folks want to see a volcano?'

We thought about it for, like, 0.273 seconds and said, "FUCK YES!"

So he took us over it. Right. Over. The Volcano.

Was it cool? Yes, it was cool.

Comment Re:Grandparents... (Score 2) 66

Do you realize where this volcano is? Hint: look at the natives in the grass skirts. They're out chasing forest critters for dinner, not gearing up to rescue stupid rich tourists. I really doubt that anybody would come out and rescue them.

Howdy, commentator! I just read your comment about the people of Vanuatu, where I live. Guess what? This whole country is full of 'natives'! Isn't that cool?!

One thing though: Promise me you will never, ever, EVER come here. Because witless, condescending fucks like you tend to get killed and cooked for dinner.

(We're not really cannibals, but we'd do it just to spite you.)

Slashdot Top Deals

"It's the best thing since professional golfers on 'ludes." -- Rick Obidiah

Working...