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Comment Re:study confirms expectations (Score 1) 192

That's actually a good question. Inks have changed somewhat over the past 5,000 years, and there's no particular reason to think that tattoo inks have been equally mobile across this timeframe.

But now we come to a deeper point. Basically, tattoos (as I've always understand it) are surgically-engineered scars, with the scar tissue supposedly locking the ink in place. It's quite probable that my understanding is wrong - this isn't exactly an area I've really looked into in any depth, so the probability of me being right is rather slim. Nonetheless, if I had been correct, then you might well expect the stuff to stay there. Skin is highly permeable, but scar tissue less so. As long as the molecules exceed the size that can migrate, then you'd think it would be fine.

That it isn't fine shows that one or more of these ideas must be wrong.

Comment Re:Wrong question. (Score 1) 197

Investment is a tricky one.

I'd say that learning how to learn is probably the single-most valuable part of any degree, and anything that has any business calling itself a degree will make this a key aspect. And that, alone, makes a degree a good investment, as most people simply don't know how. They don't know where to look, how to look, how to tell what's useful, how to connect disparate research into something that could be used in a specific application, etc.

The actual specifics tend to be less important, as degree courses are well-behind the cutting edge and are necessarily grossly simplified because it's still really only crude foundational knowledge at this point. Students at undergraduate level simply don't know enough to know the truly interesting stuff.

And this is where it gets tricky. Because an undergraduate 4-year degree is aimed at producing thinkers. Those who want to do just the truly depressingly stupid stuff can get away with the 2 year courses. You do 4 years if you are actually serious about understanding. And, in all honesty, very few companies want entry-level who are competent at the craft, they want people who are fast and mindless. Nobody puts in four years of network theory or (Valhalla forbid) statistics for the purpose of being mindless. Not unless the stats destroyed their brain - which, to be honest, does happen.

Humanities does not make things easier. There would be a LOT of benefit in technical documentation to be written by folk who had some sort of command of the language they were using. Half the time, I'd accept stuff written by people who are merely passing acquaintances of the language. Vague awareness of there being a language would sometimes be an improvement. But that requires that people take a 2x4 to the usual cultural bias that you cannot be good at STEM and arts at the same time. (It's a particularly odd cultural bias, too, given how much Leonardo is held in high esteem and how neoclassical universities are either top or near-top in every country.)

So, yes, I'll agree a lot of degrees are useless for gaining employment and a lot of degrees for actually doing the work, but the overlap between these two is vague at times.

Comment Re:Directly monitored switches? (Score 1) 54

There is a possibility of a short-circuit causing an engine shutdown. Apparently, there is a known fault whereby a short can result in the FADEC "fail-safing" to engine shutdown, and this is one of the competing theories as the wiring apparently runs near a number of points in the aircraft with water (which is a really odd design choice).

Now, I'm not going to sit here and tell you that (a) the wiring actually runs there (the wiring block diagrams are easy to find, but block diagrams don't show actual wiring paths), (b) that there is anything to indicate that water could reach such wiring in a way that could cause a short, or (c) that it actually did so. I don't have that kind of information.

All I can tell you, at this point, is that aviation experts are saying that a short at such a location would cause an engine shutdown and that Boeing was aware of this risk.

I will leave it to the experts to debate why they're using electrical signalling (it's slower than fibre, heavier than fibre, can corrode, and can short) and whether the FADEC fail-safes are all that safe or just plain stupid. For a start, they get paid to shout at each other, and they actually know what specifics to shout at each other about.

But, if the claims are remotely accurate, then there were a number of well-known flaws in the design and I'm sure Boeing will just love to answer questions on why these weren't addressed. The problem being, of course, is that none of us know which of said claims are indeed remotely accurate, and that makes it easy for air crash investigators to go easy on manufacturers.

User Journal

Journal Journal: Audio processing and implications 1

Just as a thought experiment, I wondered just how sophisticated a sound engineering system someone like Delia Derbyshire could have had in 1964, and so set out to design one using nothing but the materials, components, and knowledge available at the time. In terms of sound quality, you could have matched anything produced in the early-to-mid 1980s. In terms of processing sophistication, you could have matched anything produced in the early 2000s. (What I came up with would take a large comple

Comment Re:Don't blame the pilot prematurely (Score 4, Insightful) 54

It's far from indisputable. Indeed, it's hotly disputed within the aviation industry. That does NOT mean that it was a short-circuit (although that is a theory that is under investigation), it merely means that "indisputable" is not the correct term to use here. You can argue probabilities or reasonableness, but you CANNOT argue "indisputable" when specialists in the field in question say that it is, in fact, disputed.

If you were to argue that the most probable cause was manual, then I think I could accept that. If you were to argue that Occam's Razor required that this be considered H0 and therefore a theory that must be falsified before others are considered, I'd not be quite so comfortable but would accept that you've got to have some sort of rigorous methodology and that's probably the sensible one.

But "indisputable"? No, we are not at that stage yet. We might reach that stage, but we're not there yet.

Comment Re:Random Number Machine (Score 1) 84

>But in a good model, esp. a thinking model, one
>would expect it to think over which sorts of
>numbers are statistically over-chosen (birthdates,
>etc) and avoid them in giving its answers.

and even then, it doesn't affect the chance of *winning*, but rather the chance of being the *sole* winner, as opposed to having to share the price.

[there *is* another possibility, though, albeit unlikely: it could come across a flaw in the RNG that lets it avoid less likely combinations, or choose a more likely one. Again, though, this requires an RNG flaw.]

Comment Re:Make them occasionally? (Score 1) 186

>Mexico has a half peso coin, worth about 2 cents.

and a peso was like a dollar.

I recall my aunt feeling guilty about what she was paying down there when it dropped to about eight to a dollar.

And then they lopped three zeroes off to get the new peso.

I *think* this is half of those one-thousands of the prior peso . . .

After extreme inflation, small matters of rounding aren't even on the radar for what's important.

[Let alone the 27 or so zeroes lopped off in Germany {where, near the end, workers were reportedly paid twice a day, with their wives bringing wheelbarrows to collect, and rushing to spend it before it fell further! (which may be an urban legend; I've never been able to confirm it, but it's not inconsistent with the daily inflation)}. Or Yugoslavia, which lopped off 30 digits . . . ]

Comment Re:Also (Score 1) 48

bah.

Let me know when they start making *autographic* 120 film again. I have the camera, and am dying to shoot a roll!

The last rolls were apparently made in 1932. The cameras had a flap that could flip up and allow writing directly onto the film with a stylus. When you see handwriting on an old picture print, it was likely shot on autographic.

[and, yes, in fact my autographic camera *does* have bellows!]

Comment not really electrolux (Score 1) 123

That Electrolux isn't really an Electrolux.

a couple of decades ago, in one of those weird corporate maneuvers, it sold the name, and now sells its vacuums under another name, while the buyer sells non-electrolux as Electrolux.

So what she knows of Electrolux from the late 20th and early 21st centuries no longer applies.

But, yes, they were very good and lasted forever. Also extremely pricey.

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