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Math

Journal: help with math 1

Journal by corbettw

Hopefully somehow out there is better with math than I.

Suppose a giant ball of ice, 130km in diameter (water volume significantly greater than the Great Lakes) were to strike the moon at a speed of 3km/s (just above the moon's escape velocity). If my math is right, most of the water will remain on the moon in the newly formed crater, though I'm sure a significant amount would sublimate away over time.

Any help would be appreciated.

Oh, and this is for a possible scifi story. I just want to make sure the basis for the drama is at least plausible, it doesn't have to be 100% exact.
The question, how much water would end up left behind? I'm not sure if it would rival Lake Superior, Lake Erie, some other lake, or essentially none at all.

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Journal: Tags? 3

Journal by corbettw

Am I the only one who can't see tags on stores in the new Slashdot 3.0? No matter which story I'm looking at, there are no tags showing up. Which is too bad, because there's usually a lot of meta-humor contained in those things.

If anyone else had this problem and fixed it, please let me know what to do. I'm using the latest Firefox on WinXP SP2.

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Journal: Star Trek meets Candyland 5

Journal by grub

The other day my family was playing Candyland. Our daughter was getting into it so I started playing some classic Star Trek fight music.
The music ends just as she advances to GLORIOUS VICTORY!

YouTube video here

It's awesome, not that I'm biased... :)
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Journal: Thanks for the gift subscription! 6

Journal by grub

I just received mail notification that a fellow user has bought me a gift subscription to slashdot. I'm already friends/fans with the person but his email address isn't visible so I can't thank the person off-/. (wimp, change your privacy settings and deal with the spam! :P )
 
Not sure what I did to deserve it, but I thank you!
 

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Journal: iPad pre-orders in Canada enabled, I drink the KoolAid 4

Journal by grub

Canadian pre-orders started today.

64 GB WiFi version ordered, should be here by May 28. No need for the 3G version, I can tether with MyWi on the iPhone.

My dad picked up the similar model on a trip to the US last week. Was playing with it on the weekend, awesome device. Perhaps not magical but still most impressive.

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Journal: Fucked Up Fables: Six Soldiers Of Fortune

Journal by Moraelin
(With apologies to the brothes Grimm.)

There was once a man who was a Jack-of-all-trades; he had served in the war, and had been brave and bold, but at the end of it he was sent about his business, with three farthings and his discharge.

"I am not going to stand this," said he; "wait till I find the right man to help me, and the king shall give me all the treasures of his kingdom before he has done with me."

Then, full of wrath he went along the road and came to a huntsman who was kneeling on one knee and taking careful aim with his musket.

"Huntsman," said the leader, "what are you aiming at?"

"Two miles from here," answered he, "there sits a fly on the bough of an oak-tree, I mean to put a bullet into its left eye."

"Oh, come along with me," said the leader; "the two of us together can stand against the world."

The huntsman was quite willing to go with him, and so they went on till they came to a man standing on one leg, and the other had been taken off and was lying near him.

"You seem to have got a handy way of resting yourself," said the leader to the man.

"I am a runner," answered he, "and in order to keep myself from going too fast I have taken off a leg, for when I run with both, I go faster than a bird can fly."

"Oh, go with me," cried the leader, "three of us together may well stand against the world."

And to make the long story short, he went and gathered a few more companions, each with a grander claim to some super-ability than the others.

Meanwhile, the old king had tried to persuade his daughter to marry the young and respected son of a duke, for he had no sons and was thinking that the future duke might once make a good king too. Unfortunately the young princess had read a few books too many, and was fond of imagining herself as quite the real Amazon. She demanded of her father that if any man is to win her hand, he must best her in a contest of speed, endurance and military skill, like some ancient queen was said to have chosen her husband. And any man entering the contest must be willing to bet his very life on the outcome.

Now the king was fairly open minded for that age, and more than willing to admit that some women could make fine warriors. His people were still remembering the fierce shieldmaidens of the northmen, for example. But his daughter had always been a sickly bookworm, always short of breath, and also a little on the chubby side. The thought of her besting a trained knight was too much.

Wisely, the king said he'll go to his room to think about it, and laughed himself nearly to death into the pillow.

Still, he figured out that it's simpler than arguing with his daughter. So he agreed to send the town cryer to proclaim the decision. Secretly, he also sent a runner to the duke, urging him to send his son with the swiftest horse to enter the contest he cannot possibly lose.

Unfortunately for the duke's son, the ex-mercenary and his merry band were just entering to city as the cryer proclaimed the news. Thinking that with the help of his marvelous companions he cannot lose, he went straight to the king and asked to be tested against the princess.

The king was taken aback by the audacity of a common man to ask to marry a princess, but he realized that his announcement hadn't actually mentioned any restrictions. Fancying himself a man of great honesty and honour, the king agreed to keep his word and let him try, and sent for the princess to decide the test. She chose a race to a far away well, and the first who would make it back with a pitcher full of water would win.

"Easier than I expected," thought our ex-mercenary. "My runner will surely best any man or woman in the land." And asking for a little time to prepare, he went and asked his man with a detachable leg to dress in his clothes and run the race in his stead.

So the court gathered to watch, and at the blow of a horn the two competitors were off... much to the amusement of everyone present. The princess was soon panting and tripping over her long skirt, and making very poor progress. Unfortunately, her opponent was making even poorer progress, limping and cursing and dragging a leg behind him.

By evening, the race was over, with the princess handing her father the pitcher a good ten minutes before her opponent.

The ex-mercenary was aghast, He went to the man with the detachable leg and started screaming at him, "What was that all about?! What did you think you were doing?! Why didn't you run faster than a bird, like you said you would?!"

"Dude, " said the other man to his defense, "I thought you were kidding and I answered in kind. Haven't you seen a wooden leg before? I lost my real leg to a cannonball at the siege of Altdorf."

The conversation would have continued longer, but a squad of the king's guards showed up and took our depressed ex-mercenary to the king.

"Son, " said the king, "I figure you've lost fair and square, and it's only fair that you keep your end of the bargain. You have until morning to make your peace with God, assisted by the castle's priest. But since I like your courage, you shall not hang like a common rogue. You shall be beheaded at dawn, by sword, like a knight or noble would."

"No, father, wait!" intervened the princess who, truth be told, was starting to find the man more handsome than the groom her father had chosen for her. "This man has shown great valour in taking the challenge. Should we not give him a second chance?"

The king rolled that thought around in his head for a bit, then spoke, "That is very chivalrous of you, my daughter, and it would hardly be befitting me to stand in the way of such chivalry. Fine. Choose your next challenge, then, and tomorrow he shall face you again for his life."

This time the princess chose a contest of archery. Our hero politely inquired if he may use a gun, saying that it was a more familiar weapon to him. The princess agreed. With that, the king called the meeting over, and asked the guards to lead the man and his companions to a guest room in the palace.

So this time the ex-mercenary asked his hunter companion to dress like him and go in his stead the next day.

The next day, two large targets were set at a hundred paces away. The two contestants were given a dozen arrows and respectively a dozen bullets, and told to start shooting.

Again the princess did rather poorly, only now occuring to her that reading about ancient Scythian archer women didn't actually count as archery training. Only half of her arrows hit the target at all, and none of them went even close to the bullseye.

Unfortunately our hero's sharpshooter did even worse, with barely two of his shots even touching the target. As the court jester remarked, he did at least get one bull's eye. He actually shot the eye of a bull across the road to the right, dropping him dead on the spot. But since it wasn't on his target, it didn't count.

Again, our ex-mercenary was shocked and he went to berate his huntsman, "What in the Lord's name was that all about?! Didn't you say you could hit a fly in the eye from two miles away?! How could you miss a five foot wide target at a hundred paces?! I could have shot a higher score myself than you and that tomboy put together!!"

"To be honest, " the hunter answered, staring at his own shoes, "that was a joke, and it never occured to me that anyone would take it seriously. I mean, really," he continued as he showed his gun, "this is a smoothbore musket. You said you were in the army, for crying out loud. Two miles? It can't even shoot a ball past two hundred paces. Even at one hundred, as my old captain used to say, the only way to hit a man is if you aimed at another man."

And as the guards were taking him first to the king, and then to the place of his execution, it occured to our hero that maybe he should have tested his employees instead of simply believing any wild claim.

User Journal

Journal: Freedom is free 2

Journal by corbettw

I had a realization the other day, and thought I'd share it with my fellow Slashdotters.

I was watching one of the viral videos for McCain, by a former Army sergeant who lost his leg in Iraq. He was speaking to Obama, telling him why he wouldn't vote for him, and ended his message with the cliche that "freedom isn't free".

I beg to differ. Freedom is most certainly free. None of us are free because we are Americans; we aren't free because of the men and women who have risked their lives to safeguard our borders and national interests; and we certainly aren't free because of politicians who give rousing speeches before thousands.

We're free because we're human beings. We have an inherent freedom, built into the fabric of our beings and selves. It's not something that can be taken away or given by another. And it's something that all people, throughout the world and throughout time, have.

Yes, we are fortunate to live in a land where the laws recognize this freedom, at least for the most part. But don't ever think you owe your freedom to the actions of any person, or groups of people. They didn't make you free; you were free long before they made whatever sacrifices they may have made, and will remain free long after those sacrifices are forgotten.

The reason this is important to remember is, if we start thanking our servicemen and women "for their service", with the understanding that they somehow gave us our freedom, well, anyone who can give a thing, can take that thing away. We mustn't allow ourselves to fall into the trap of worshipping our military, or thinking that all we have in our lives comes from their beneficence. It's a very small step from that kind of thinking to giving up control of our lives and our liberties to men in uniform.

former IT1, USNR

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Journal: Did you get a survey re: Slashdot? 5

Journal by grub

I had this come to me today.

Is this legit? A well crafted spam/mining operation? Sent to zillions of /.ers?

My tinfoil hat is buzzing, probably for no reason as is the norm.

Dear grub: My name is Lily Liu. I am a PhD student carrying our a project with my supervisor Christian Wagner (iscw@cityu.edu.hk) who is a professor at City University of Hong Kong. We are trying to understand the popularity of Slashdot to its active contributor, such as you. We hope you might be able to help us in our effort by answering three questions.

*Question 1:*
In your opinion, what (if so) makes Slashdot special among online discussion sites? Is it the content, the group of people it draws in, the discussion engine (e.g., content rating and filters), or possibly other factors?

*Question 2: *
Compared with other discussion sites you know or/and have used, do you consider Slashdot's technology platform to be better? In other words, does it encourage (a) more sense of community or (b) more active participation?
(In answering please also feel free to mention the other discussion site or sites you might be comparing to)

*Question 3:*
As a unique user in Slashdot, could you please rate your own reciprocity by assessing what you get from the community compared with what you contribute to it?(you can give an answer such as: i think i get more or i contribute more,of course we would be very appreciative for your explanation of detail)
**

Please let us know at your earliest convenience. We will quickly summarize results and gladly send you a summary, if you are interested (and sufficient replies are received to create a meaningful summary).

Thank You for Your Time and Valuable Feedback!

Sincerely,
Lily

User Journal

Journal: Hey Motorhead Fans.... 5

Journal by grub
Rock Out video from the great new disc Motorizer.

They had to change "Rock out, with your cock out, impress your lady friends" to just "Rock out, rock out, impress your lady friends"

Ah well, all is great. Hope they make it back here, you feel like you've been through 10 rounds with Mike Tyson after a show.
User Journal

Journal: Fucked Up Fables: The Ass In The Lion Skin

Journal by Moraelin

One day an Ass put on a Lion's skin and proceeded to amuse himself by taking a stroll through the woods, trying to scare all animals he encountered. He brayed at a Wolf in what he thought to be a good enough imitation of a lion's roar, and the Wolf ran away into the bush. He did the same to a Monkey, and the monkey too ran up into a tree. The Ass was proud of himself. At long last he saw a Fox, and proceeded to do his best imitation of a lion's roar at him too.

The Fox however was a lot less than impressed, and answered, "Ho ho ho, if it isn't an ass trying to look important. Congratulations, though, I almost took you seriously until you opened your mouth."

Not minding the Ass's dejected looks much, the Fox continued, "But seriously, don't you have something else to do or someone else to bother? I've worked 60 hours this week so far, and it's only Friday _morning_, and, frankly, I have neither the time nor the mood to entertain you guys." And the Fox trotted along, ignoring the Ass.

The Ass was now depressed and he went to the side to munch on some leaves, and he started drawing doodles in the dirt with a hoof to pass the time and take his mind off the brutal rejection he had just received. He ate and he doodled, but somehow he just couldn't take his mind off it.

Suddenly he heard a voice nearby, "Ah, finally someone with some fashion sense. I was starting to think it's a lost cause..." As the startled Ass rose his eyes, he saw an impressively tall Lion in front of him, eyeing him and his doodles in the dirt.

"I'm toast," thought the Ass, "there's no way a Lion would mistake me for the real thing."

So, in desperation, the Ass started to bray at him. "Syyynergy!" He brayed. "Leverage! TCO! Customer-centric! Industry best-practices!"

"Ah, " brayed the new 'Lion' right back, in the best donkey language, "so you speak management too. This day is looking brighter already. Between you and me, the other candidates are a joke. Have you seen what they wear to an interview? By the way, you _are_ here about the job opening, right?"

"Huh? What job?," replied the bewildered Ass.

"Well, to keep the story short," brayed the 'Lion', "I used to be the manager of this forest clearing, but they promoted me, so now I have to find a replacement. And Tim here," said the 'Lion' pointing to yet another Ass dressed in a lion skin, "is our HR representative. He'll help me pick a good candidate. I guess you haven't sent in a CV either, since you're not here for the interview, but I guess we could bend the rules a bit if you want to take part anyway."

"Uh, ok..." answered the Ass, still not entirely sure what he's walked into.

"I see you brought a sample of your work too," continued the 'Lion', pointing a hoof at the doodles in the dirt. "Nice flowchart. What is it of?"

"Oh, that," grinned the Ass, "nothing in particular. I was just thinking of food, mostly."

"And you drew a good hundred square metres of flowchart just about that? I'm impressed. Reminds me of some of my best work: the corporate regulation and flowchart of how to piss. Admittedly, it was mostly to annoy the Wolf, but I digress. Well, I can't make a definitive commitment yet, so this is strictly off record and non-binding, but I think your chances are good. We'll call you later if we decide to hire you."

User Journal

Journal: The Fanboy Bullshit Form

Journal by Moraelin

In the interest of fanboys and zealots everywhere, and to spare them the minimal thinking effort, I propose the following form. All the options are genuine from genuine posts encountered on the Internet in the last decade. The wording may not be the original, but the spirit hasn't been altered at all.

You are a liar, and the feature/bug (cross out the one that doesn't apply) you talk about doesn't even exist, because:
 
[] I haven't personally seen it happen, therefore it doesn't exist.
[] It only happens once every 1-2 hours on my computer. (But that won't stop me from both it doesn't exist.)
[] ... and even that is my fault. (But that won't stop me from pretending that I'm an expert on what to do on your computer.)
[] Nobody told me about it.
[] It only seems to happen to a couple (of hundreds) of whiners.
[] "Everyone" knows it's not true.
[] "Everyone" knows it can't be true for programs made by _______________ (insert company.)
[] I once worked as Level 1 tech support at an ISP, and had to deal with your kind of idiots every day.
 
You're only claiming that because you're:
 
[] paid by _______________ (insert same, or competitor company) to post that
[] brainwashed by __________________ (insert same, or competitor company)
[] not elite enough to like the right stuff, let me tell you what your tastes should be.
[] a liar.
[] a troll.
[] in denial.
[] against innovation.
[] having mental problems that you confuse for having different tastes than I do.
[] too stupid to use a computer.
 
The problems you encountered -- and which I still claim that it doesn't exist -- are your own damned fault, and can be solved by:
 
[] defragging your computer. (Race conditions and crashes just appear out of nowhere, if you forget to defrag your computer.)
[] activating AA in your drivers. (AA solves rendering artefacts. Broken graphics and glitches are called artefacts too. You do the maths.)
[] buying a new quad-core triple-SLI compressor-cooled overclocked computer. (What do you mean your config matches the recommended specs? If you don't have a computer that cost $5000, you shouldn't be playing games at all.)
[] replacing your motherboard with a compatible one.
[] turning off your firewall and/or antivirus.
[] rebooting your computer. (As any Level 1 tech support guy knows, that's the miracle cure for everything.)
[] learning to play the damned game. (Yes, falling through the ground is just because you're a noob.)
[] stopping being so lame as to do or like other things in a game than I do.
[] saving every 5 minutes in a different slot.
[] using the cheats / external trainer programs. (Hey, it's already playable with that cheat, so stop asking to fix the game.)
[] stopping posting about it! If people find out that the game sucks, there won't be enough players to make mods that fix it!
[] introspection and realizing that only your mental problems and personality deffects prevent you from seeing things exactly my way.
[] packing your computer in the original carton, taking it back to the shop, and telling them that you're too fucking stupid to own a computer.
 
I am an authoritative source on the subject because:
 
[] I have used the program for few minutes.
[] ... on a friend's computer.
[] I have installed it on a computer.
[] Although I haven't yet, I plan to use the program in the future.
[] ... and I have a good feeling about it.
[] I have read about it in another thread.
[] A couple of people have aggreed with me before.
[] I know that _______________ (insert company) would never do that.
[] My user id is lower.
[] I have a gazillion of level 70 characters! On every server!
[] I was in the beta! (But somehow it's just not recorded anywhere.)
[] I could pwn your sorry ass in the game.
[] I could beat you up IRL.
[] My dad probably makes more money than yours.
[] I once worked as Level 1 tech-support for an ISP, and that makes me the expert on all software, hardware and users.
 
Furthermore, I'd like to state that:
 
[] you're a liar.
[] you're a noob.
[] I'm going to mod you down in other threads for disaggreeing with me.
[] someone should mod you down in this thread too, for disaggreeing with me.
[] you'll only have the right to criticize it, when you can make a better program.
[] if you don't like it, fix it yourself.
[] you're too damn impatient. It will rule after they patch it and/or people make mods that fix it.
[] it's people like you who are the problem with society today.
[] you're living proof of what's wrong with education today.
[] we need a goddamn IQ test before letting idiots like you use a computer.
[] you mis-spelled "math" as "maths", therefore you're stupid and uneducated, and nobody should listen to your opinion.
[] I don't even understand what your problem is. Learn to write more than a paragraph, noob.
[] nobody has time to read a whole page about where the bug happens. If you can't say it in 1 sentence or less, it's not worth reading.
[] people should just respect and listen to us who've earned our expertise in Level 1 tech support.

It is wrong always, everywhere and for everyone to believe anything upon insufficient evidence. - W. K. Clifford, British philosopher, circa 1876

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