Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
×
Education

Proving 0.999... Is Equal To 1 1260

eldavojohn writes "Some of the juiciest parts of mathematics are the really simple statements that cause one to immediately pause and exclaim 'that can't be right!' But a recent 28 page paper in The Montana Mathematics Enthusiast (PDF) spends a great deal of time fielding questions by researchers who have explored this in depth and this seemingly impossibility is further explored in a brief history by Dev Gualtieri who presents the digit manipulation proof: Let a = 0.999... then we can multiply both sides by ten yielding 10a = 9.999... then subtracting a (which is 0.999...) from both sides we get 10a — a = 9.999... — 0.999... which reduces to 9a = 9 and thus a = 1. Mathematicians as far back as Euler have used various means to prove 0.999... = 1."
Movies

Lawrence Lessig Reviews The Social Network 223

Hugh Pickens writes "Lawrence Lessig — author, Harvard law professor, co-founder of Creative Commons — reviews The Social Network in The New Republic. Although Lessig says the movie is an 'intelligent, beautiful, and compelling film,' he adds that as a story about Facebook, it is deeply, deeply flawed because the movie fails to even mention the real magic behind the Facebook story, and while everyone walking out out of the movie will think they understand the genius of the internet, almost none of them will have seen the real ethic of internet creativity that makes success stories like Facebook possible. 'Because the platform of the Internet is open and free, or in the language of the day, because it is a "neutral network," a billion Mark Zuckerbergs have the opportunity to invent for the platform,' writes Lessig. 'And that is tragedy because just at the moment when we celebrate the product of these two wonders — Zuckerberg and the Internet — working together, policymakers are conspiring ferociously with old world powers to remove the conditions for this success. As "network neutrality" gets bargained away — to add insult to injury, by an administration that was elected with the promise to defend it — the opportunities for the Zuckerbergs of tomorrow will shrink.' Lessig laments that the creators of the movie didn't understand the ethic of Internet creativity and thought that the real story was the invention of Facebook not the platform that made such democratic innovation possible. 'Zuckerberg is a rightful hero of our time,' concludes Lessig. 'As I looked around at the packed theater of teens and twenty-somethings, there was no doubt who was in the right, however geeky and clumsy and sad. That generation will judge this new world. If, that is, we allow that new world to continue to flourish.'"
The Internet

Why Twitter's T.co Is a Game Changer 109

macslocum writes "If Twitter is so inclined, the company could turn the new t.co shortening service into a powerful analytics tool that solves the marketing and tracking issues of off-site engagement."
Cellphones

Wired Youths In China & Japan Forget Character Forms 508

eldavojohn writes "The AFP brings a story of a growing concern that children in China and Japan suffer from 'character amnesia' when asked to write the complex characters they are so used to inputting via alphabet-based systems. The article claims this is a growing problem. In China, they have a word for it: 'tibiwangzi,' which means 'take pen, forget paper.' China Youth Daily polled 2,072 people and found that 83% have problems writing characters (although there's no indication if that was an online poll or not). A young woman who was interviewed explained her workaround: 'When I can't remember, I will take out my cellphone and find it (the character) and then copy it down.'"
Image

Google's CEO Warns Kids Will Have to Change Names to Escape "Cyber Past" Screenshot-sm 706

Google's Eric Schmidt says that people's private lives are so well documented now that the young will have to change their names when reaching adulthood to avoid their youthful indiscretions. In an interview with the Wall Street Journal Schmidt says: "I don't believe society understands what happens when everything is available, knowable and recorded by everyone all the time." A fresh start from the stupid things you did as a kid seems like a good thing. Now we just need a way to get rid of the dreaded family photo album.

Submission + - Swedish Pirate Party to Host New WikiLeaks Servers (piratpartiet.se) 1

Ezel writes: The Pirate Party will host several new WikiLeaks servers. This was agreed during Julian Assange’s visit to Stockholm last weekend, and the Pirate Party is happy to announce that everything has been finalized.
Last week, the Pirate Party challenged the other Swedish parties to assist WikiLeaks in its democratic effort. The Pirate Party has been the first to step up uo the plate, and keeps calling on others to defend freedom of the press in Sweden. As a result, WikiLeaks have commissioned a number of new servers that will be hosted and taken care of by the Pirate Party.

The Pirate Party will provide bandwidth and hosting to WikiLeaks free of charge as part of its political mission.

Hardware

Submission + - Chips that flow with probabilities, not bits (technologyreview.com)

holy_calamity writes: "Boston company Lyric Semiconductor has taken the wraps off a microchip designed for statistical calculations that eschews digital logic. It's still made from silicon transistors. But they are arranged gates that compute with analogue signals representing probabilities, not binary bits. That makes it easier to implement calculations of probabilities, says the company, which has a chip for correcting errors in flash memory claimed to be 30 times smaller than a digital logic-based equivalent."
Cellphones

Android Data Stealing App Downloaded By Millions 335

wisebabo writes "A wallpaper utility (that presents purloined copyrighted material) 'quietly collects personal information such as SIM card numbers, text messages, subscriber identification, and voicemail passwords. The data is then sent to www.imnet.us, a site that hails from Shenzen, China.'"
Image

Man Wants to Donate His Heart Before He Dies Screenshot-sm 456

Gary Phebus wants to donate his heart, lungs, and liver. The problem is he wants to donate them before he dies. Gary was diagnosed with amyotrophic lateral sclerosis, better known as Lou Gehrig's disease, in 2008. Phebus says he'd like to be able to donate his organs before they deteriorate, and doesn't consider his request suicide because he's "dead anyway."

Slashdot Top Deals

"Experience has proved that some people indeed know everything." -- Russell Baker

Working...