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Comments

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Why Do Humans Grow Up So Slowly? Blame the Brain

arth1 Re:not so fast (128 comments)

In ALLpatriarchal human societies, men prefer women younger than themselves

FTFY.

Do you have an example of a matriarchal society where men do not overall prefer women younger than themselves? It only takes one counter-example to topple his claim, but you need to provide one.

2 days ago
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How many devices are connected to your home Wi-Fi?

arth1 Re:Phones + 1 laptop. (259 comments)

Yup.. gigabit is USELESS in the home unless you have a home server.

"A" home server? Who would have just one?
Local DNS, DHCP and DCHPv6 servers need failover, and onsite online backups are done cross-server.
So I'd think any nerd would have at least two.

I also have two different wired networks - one that is used for clients to talk to the servers and the gateway, and one that's used for servers to talk between themselves. There's no reason for traffic between a client and a server or internet to get slowed down just because one server backs itself up to another.

And two different Wireless N networks - one 2.4 and one 5 GHz. That way, using one band won't slow down the other.

3 days ago
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Why Do Humans Grow Up So Slowly? Blame the Brain

arth1 Re:not so fast (128 comments)

The human body can't process those calories any faster. They have to be changed into glucose.

They already have been changed to glucose before they become fat, which means that the body quite obviously could process them. That they became fat is because there weren't any takers for the glucose.

3 days ago
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Why Do Humans Grow Up So Slowly? Blame the Brain

arth1 Re:not so fast (128 comments)

Wow, I can't believe that someone missed the point so completely!
The point being that it is unlikely that the brain is stealing the glucose and thus stunting growth like the article supports, because when kids are fat, that means they have metabolized carbs->glucose->fat, and thus have had plenty of glucose. That fat kids' bones don't appear to shoot past normal kids in growth strongly suggest that there are other reasons why kids don't grow physically to adults in half the time.

I suggest that being smaller and having different proportions to adults triggers the "do not harm" and "protect" instinct in most adults, thus increasing the chance of reaching adulthood and bringing one's genes on.
There are probably other survival advantages, like having less mass and more flexible bones might be adventageous at the age one learns to climb trees and cliffs.
When reaching the age where one is going to procreate and bring up own children, the advantage is to have a more adult body, capable of hunting, foraging, carrying and protecting.

Get it now, or are you going to get sidetracked by a single word again?

3 days ago
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Why Do Humans Grow Up So Slowly? Blame the Brain

arth1 Re:not so fast (128 comments)

Imply in real-world terms means hint at.

No, it doesn't. You have the wrong idea of what "imply" means. It is not a synonym for "hint at" or "suggest" any more than "implication" is a synonym for "hint" or "suggestion". It is a near synonym to "mean".

That you have two X chromosomes and no Y chromosome implies that you are female. It does not merely hint at it.

When I used the word imply in the real world example of my GPP, it was to say exactly what I said. Not your uneducated guess at what it means.

3 days ago
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Why Do Humans Grow Up So Slowly? Blame the Brain

arth1 not so fast (128 comments)

That there is an inverse correlation between brain glucose use and body growth does not imply that the brain's use of glucose stymies the growth until later.
If that were the case, kids who are overfed carbohydrates would be smarter and taller, not fatter and dumber.

My guess is that slow growth is selected for because children who look like children enjoy special care and protection by adults. Growing to adult size by age 7 might be detrimental to survival.

4 days ago
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Ross Ulbricht Faces New Drug Charges

arth1 Re:More litigants! (102 comments)

If they knew of quality problems that might be a danger and failed to inform you in order to make a profit, yes, absolutely.

5 days ago
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How Does Tesla Build a Supercharger Charging Site?

arth1 Re:Enough of the Tesla circle jerk (190 comments)

Those are bullshit numbers. That's percentage OF CAR SALES that are EVs. Areas with fewer cars to begin with are disproportionally represented.

Grasping at straws, much?

It's not like Norway is being a third world country catching up on car ownership. For decades now, the Scandinavian countries have consistently been in the top ten for things like GNP/capita, expendable income and median income and technological penetration.
The cars are being replaced with electrics, in great part because of government incentives like no tolls or parking fees, and publicly funded charging stations, but also because of environmental consciousness.

:

"Plug-in hybrid sales in 2012 were led by the United States with a 70% share of global sales, followed by Japan with a 12%, and the Netherlands with 8%."

And again, you bring in total sales figures, like if they said anything about penetration. They don't. We have a strong total sales because of two things - we (a) have over 300 million people, and (b) a lot of those cars we sell, we sell to other countries. Our domestic adoption rate is not high at all, and especially not for full-electric (non-hybrid) vehicles.

Don't bother answering, because you've ended up in my plonk file along with other closed minded people who live in the past. I'd ask what kind of electric vehicle you drive, but you don't.

about a week ago
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South Carolina Student Arrested For "Killing Pet Dinosaur"

arth1 Re:Mandatory panic! (421 comments)

Contrary to what many, especially Americans, think, you cannot win a war. The "winners" are simply the last ones standing, whether they have lost arms legs or heads.
We still lost the war, like every other participating country.

(And two? One can hardly say that USA "won" the great war. The American participation was minimal and not decisive in any way.)

about a week ago
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South Carolina Student Arrested For "Killing Pet Dinosaur"

arth1 Re:Mandatory panic! (421 comments)

Exactly, the pen is mightier than the sword! Will someone think of the children having to witness these horrors!

Google does. Their new e-mail filter might reject statements like the above depending on the word frequencies in spam du jour, because it contains the phrase "pen is".

I wish I were only joking.

about a week ago
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How Does Tesla Build a Supercharger Charging Site?

arth1 Re:Enough of the Tesla circle jerk (190 comments)

Both Europe and the EU proper have considerably more people than the US, so they're WAY behind per-capita, as well.

If you don't like my source, you're free to provide your own to backup your ridiculous claims, but I don't expect you will...

EU isn't a country.

Check some statistics - Norway at first place has 6.1% penetration, followed by five other European countries and Japan, while USA is down at 8th place, with an order of magnitude(!) less electric car penetration than Norway.

As usual, USA lags behind, but thinks it's at the forefront. Hell, people here still use personal cheques (which most of the world abandoned in the 1990s), companies use telefaxes, and most people can't even get high speed internet (with high speed being the definition from the 1990s with guaranteed 10 Mbps up and down). We live in the stone age compared to many other countries, but are too close minded to admit it.

about a week ago
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How Does Tesla Build a Supercharger Charging Site?

arth1 Re:Enough of the Tesla circle jerk (190 comments)

Using the total figures is as uninteresting as saying that the Chinese have more sex than anyone else, because the total number of fucks is higher than any other country.

You have to look at the per capita figures, not the total.

And for car sales, subtract exports, because they don't increase the domestic adoption rate.

about a week ago
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How Does Tesla Build a Supercharger Charging Site?

arth1 Re:Enough of the Tesla circle jerk (190 comments)

The problem is that with Lithium batteries, you can't tell the usable capacity from the charge. A battery might be 100% full and give you a fraction as much kWH as another 100% full battery. You have to measure how much is actually pulled out of it, or it will be a crapshoot, and the whole system won't be workable.

We deal with electric meters on the wall, so this shouldn't be much different, apart from the battery sending the information to the service station instead of to the electric company.

about a week ago
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How Does Tesla Build a Supercharger Charging Site?

arth1 Re:Enough of the Tesla circle jerk (190 comments)

If EVs continue to develop, and become cost-effective, they will be widely adopted, and it will be Europe that lags behind and at a disadvantage, not EVs.

With the adoption rate of electrical vehicles being several times as high in Europe as in the US, I don't think you have to worry about that. There will be challenges, yes, and the European way is to solve those through legislation when corporations aren't willing to adapt.

about a week ago
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How Does Tesla Build a Supercharger Charging Site?

arth1 Re:Enough of the Tesla circle jerk (190 comments)

And my fossil fuel car gives me 400 miles range in less than two minutes of fueling.

Electric cars are good for many things, but long range driving is not one of them. Not only do you have to plan your driving based on where you can find a suitable outlet, but waiting for half an hour every two hours isn't very competitive compared to gasoline and diesel engines.

What could work in the future is standardized batteries you can exchange at any station for any car (no proprietary solutions), and a sealed meter in your car measures how much juice you actually pulled out of the battery (so you won't have to pay full price for a half-dead battery). But without standards, it's going to be tough.

about a week ago
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The IPv4 Internet Hiccups

arth1 Re:Yes, Please (248 comments)

This means that their DNS resolver will know to only return IPv4 routes since IPv6 routes aren't usable. Thus no problem.

That depends. The "filter AAAA on ipv4" option is quite new in bind 9, and probably not available on the majority of DNS installations out there.
My guess is that a majority of ISPs will gladly send IPv4 clients the AAAA records. Which, in my opinion, is a good thing. Just because the query goes through IPv4 doesn't necessarily mean a client doesn't have IPv6.

about two weeks ago
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Password Gropers Hit Peak Stupid, Take the Spamtrap Bait

arth1 Re:This guy might be overvaluing his files (100 comments)

Why is this "insightful"? By the time the spam is processed by the trap and is blacklisted, the million e-mails have already been delivered.
The next time the spammer sends e-mail, it will be a different e-mail, so the existing rule won't trigger.

The only real effect this has is adding fat to the spam checkers, making mail delivery slower for everyone. Except the spammer.

about two weeks ago
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The IPv4 Internet Hiccups

arth1 Re:Lack of incentives...? (248 comments)

The only truth there is the really surprising one. A /.er with a wife.

Wives are like PCs. If you need one, you need several. And you can always hack someone else's to use.

about two weeks ago
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Password Gropers Hit Peak Stupid, Take the Spamtrap Bait

arth1 Re:This guy might be overvaluing his files (100 comments)

Right, it is irrelevant for the spammer. He's not using his own resources. Whether he sends e-mail to a million real and a million fake addresses, or to a million real and two million fake ones does not matter.

What's "peak stupid" here is the submitter not understanding how spamming works before posting on it.

about two weeks ago
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The IPv4 Internet Hiccups

arth1 Re:Yes, Please (248 comments)

And most people don't need router technology in their home that's newer than 10 years old.

Once their OS is told that www.google.com has internet address 2607:f8b0:4009:805::1010, they sure do.
Or once their ISP switches to IPv6.

What's sad is that slashdot.org does not have an AAAA address.
News for whom?
Stuff that what?

about two weeks ago

Submissions

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Blog pioneer WELL close to closing

arth1 arth1 writes  |  more than 2 years ago

arth1 (260657) writes "One of the first Internet communities outside Usenet, The WELL (Whole Earth 'Lectronic Link) is in dire waters. The owners, Salon, have laid off the entire staff, and are looking for buyers.

The WELL started out as a BBS-like entity, and proceeded through telnet to also support web and e-mail. Its web interface may seem dated by today's standards, but it works quite WELL, and was an influence on many later online communities, including Slashdot.

Subscribers received an e-mail from Salon Media Group's CEO Cindy Jeffers, stating:
"[....]as part of the company’s review of its strategic objectives, we have determined that The WELL no longer aligns with our business plans and accordingly we are exploring transferring The WELL to new management."

This came as a surprise to the employees. Gail Williams, one of the (former) employees wrote in a newsletter:

"On May 30, 2012, the community department at Salon was disbanded, and the three employees who had been working from 30% to 100% on running The WELL were laid off. We were shocked, of course."

Now is the time to make an offer to save this historic landmark on the Internet."

Link to Original Source
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arth1 arth1 writes  |  more than 7 years ago

arth1 (260657) writes "From the Bay City news wire:

"A friend of Nina Reiser, an Oakland woman police believe was murdered, has helped set up an education fund for her two young children.

Ellen Doren said people who want to contribute to the fund should make out checks to "Education Fund for Rory and Nio Reiser" and send them to Education Fund for Rory and Nio Reiser, 6114 LaSalle Ave #127,Oakland, CA 94611."


Sounds like a good idea; orphan kids are stuff that matter."

Journals

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Letter frequencies in URLs

arth1 arth1 writes  |  about a year ago

Doing some maintenance on a few squid cache servers, I decided to look into the letter frequency distributions for URLs, and how it matches normal written text.
Four caches were scanned for the URLs of currently cached content only, constituting around 1.5 million URLs.

In short, the results have some of the same characteristics as normal text, but with notable exceptions. You don't get an etaoin shrdlu; there are a lot of h, t, p, colons and slashes in URLs which skew the results. I'm also surprised that w scored so low, given all the URLs that start with www.

If anyone else finds a use for this, here is the data. Each character in the URL is followed by the number of times it was used in each cache, plus the total for all four caches.

/: 83198 130244 3028097 2929538 6171077
t: 73026 99729 2727455 2641930 5542140
e: 52801 95537 1746624 1753865 3648827
.: 35317 60175 1478231 1467006 3040729
o: 40941 86873 1423124 1448453 2999391
a: 43075 72450 1408451 1384211 2908187
c: 36078 64921 1308435 1295986 2705420
s: 41946 76684 1251987 1278493 2649110
p: 28248 44907 1214805 1190698 2478658
m: 29609 45768 1168769 1195505 2439651
h: 22543 41992 1029463 1019494 2113492
i: 37846 58586 974977 994693 2066102
n: 30006 51596 815477 795344 1692423
r: 26958 53239 801514 774606 1656317
g: 23689 57734 666533 790131 1538087
d: 23304 36637 746244 697523 1503708
:: 15442 27059 639115 649013 1330629
w: 25563 41061 622672 629215 1318511
1: 9697 12580 577523 561429 1161229
l: 21855 32824 560110 542960 1157749
2: 9890 13516 492565 514385 1030356
u: 11878 15246 440808 431176 899108
0: 10333 13106 404229 445998 873666
v: 7450 8415 328991 292590 637446
b: 9980 26743 280533 285767 603023
3: 6296 6905 299391 272352 584944
f: 9866 25830 265685 266037 567418
4: 4738 5931 273161 244104 527934
k: 4202 5641 235501 230456 475800
5: 5957 6920 212941 235172 460990
7: 6497 7333 230677 200956 445463
9: 4327 5215 206613 195295 411450
8: 5363 6697 210689 178565 401314
6: 5761 6487 209092 175203 396543
x: 3853 5755 168401 144265 322274
-: 3516 11325 124398 133481 272720
y: 4348 5272 114803 96971 221394
_: 2301 2683 87749 80901 173634
j: 4436 5058 89043 72567 171104
=: 1555 1437 37342 35214 75548
q: 1494 1538 32910 37861 73803
z: 741 907 29563 30037 61248
,: 3282 2848 21099 14688 41917
&: 493 413 12558 9222 22686
%: 220 460 9640 11420 21740
;: 2878 2254 8281 8281 21694
?: 322 294 4796 9264 14676
+: 45 35 1333 1758 3171
~: 31 7 996 735 1769
$: 0 0 425 670 1095
^: 6 0 420 228 654
*: 27 10 187 188 412
!: 0 2 282 122 406
[: 0 0 292 23 315
]: 0 0 272 23 295
|: 8 8 77 167 260
@: 10 0 113 38 161
(: 0 0 75 55 130
): 0 0 69 55 124
{: 0 0 75 0 75
\: 0 0 6 4 10
': 0 0 1 1 2

Does it have any practical use?
Perhaps. In proxy.pac files, a common method of load balancing based on URLs, known as the Sharp Superproxy script, is to sum the ASCII values of the cache entries, and mod it by the number of servers, to pick a server to use. .pac files are javascript, and javascript does not have an easy method to return the ascii value for a character. So what's generally used is a function like:

function atoi(charstring) {
    if (charstring=="a") return 0x61; if (charstring=="b") return 0x62;
    if (charstring=="c") return 0x63; if (charstring=="d") return 0x64;
//.....
}

This can be speeded up by ordering the list in the order of frequency, starting with "/", "t", "e", ".", "o", "a" - just moving those few to the front, reduces the latency of the script significantly.

Also, hashing in URL history handling can be sped up if the most prevalent buckets are created. This could also be useful for other URL collections, like AV software URL matching. I am unaware of any that work directly with character based lookups, but it is certainly one way to do it.

Other uses?
In pen testing, having a frequency table like this can greatly aid in URL discovery speed.

But all in all, it was a fun exercise. Note that the variations may be great, especially for the bottom half of the list. Also note that the low count for the letter 'x' in the URLs might not match your users.

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Slashdot clandestinely scanning its users

arth1 arth1 writes  |  more than 5 years ago

I just discovered something I'm not sure I like.

Whenever I post something to slashdot, slashdot connects back to port 80 on the machine I post from, looking for an open proxy on port 80.
This isn't behavior I really like to see. It's unsolicited, and more to the point, it takes advantage of a local firewall possibly being temporarily open for traffic FROM an address for a short while after connecting TO it.
There might be a "good cause", like collecting a list of open proxies for the poor guy behind the Great Firewall of China or something similar, but it's still unsolicted, clandestine and not documented.

Here are a couple of web log entries showing this:
216.34.181.45 - - [10/Sep/2008:15:47:47 -0400] "GET http://news.slashdot.org/ok.txt HTTP/1.0" 404 271 "-" "libwww-perl/5.812"
216.34.181.45 - - [10/Sep/2008:20:32:18 -0400] "GET http://mobile.slashdot.org/ok.txt HTTP/1.0" 404 273 "-" "libwww-perl/5.812"

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