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The Hardest Logic Puzzle Ever

The Hardest Logic Puzzle Ever
The Hardest Logic Puzzle Ever is a logic puzzle invented by American philosopher and logician George Boolos and published in The Harvard Review of Philosophy in 1996. A translation in Italian was published earlier in the newspaper La Repubblica, under the title L'indovinello più difficile del mondo. The puzzle is inspired by Raymond Smullyan. It is stated as follows: Three gods A, B, and C are called, in no particular order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is a completely random matter. Boolos provides the following clarifications:[1] a single god may be asked more than one question, questions are permitted to depend on the answers to earlier questions, and the nature of Random's response should be thought of as depending on the flip of a coin hidden in his brain: if the coin comes down heads, he speaks truly; if tails, falsely.[2] History[edit] The solution[edit] Boolos' question was to ask A:

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Recent Database Breaches Teach Security Lessons FIDO Alliance technology will allow enterprises to replace passwords with plug-and-play multifactor authentication. By Phil Dunkelberger President & CEO, Nok Nok Labs, 3/26/2014 1 Comment | Read | Post a Comment News Hackers interrupt and deface sites of black-market forums selling credit card data stolen from Target and other retailers.By Mathew J. Schwartz , 3/18/2014 Seeing in the Dark & SEEDMAGAZINE.COM Credit: cliff1066tm. Patient TN was, by his own account, completely blind. Two consecutive strokes had destroyed the visual cortex of his brain, and consequently, his ability to see. It is not uncommon for stroke patients to suffer brain damage, but the case of TN — referenced by his initials, the general practice in such studies — was peculiar. His first stroke had injured only one hemisphere of his visual cortex. About five weeks later, a second stroke damaged the other hemisphere.

Create a Facebook Fan Page for your Blog Facebook is a great Social Networking Site to promote your blog or brand. Most of the major brands do have a Facebook Fan Page. Here are some examples of Facebook Fan pages – Coca Cola FB Fan Page , Mashable FB Fan Page. Are you impressed and want to create one for your blog?

handwriting tips - StumbleUpon You’ve decided you want to improve your handwriting and you’re probably hoping a fountain pen will do the trick -- maybe a friend told you it would. Maybe you’re just adventurous and you want to try your hand at calligraphy (or you might, once your handwriting improves). Good for you! A fountain pen may make your writing look a bit better, but if your writing looks as if frenzied chickens got loose on the page, chances are this won’t be enough.

Culture of Japan Castles in Japan were built to guard important or strategic sites. Osechi, new year special dishes in three-tiered box The culture of Japan has changed greatly over the millennia, from the country's prehistoric Jōmon period, to its contemporary modern culture, which absorbs influences from Asia, Europe, and North America.[1] Japan's indigenous culture originates primarily from the Yayoi people who settled in Japan between 1000 BCE to 300 CE. Yayoi culture quickly spread to the main island of Honshū, mixing with the native Jōmon culture.[2] Modern Japanese have an estimated 80% Yayoi and 20% Jōmon ancestry.[3] The inhabitants of Japan experienced a long period of relative isolation from the outside world for over 220 years during the Tokugawa shogunate until the arrival of the "Black Ships" and the Meiji period.

7 Basic Things You Won't Believe You're All Doing Wrong If you're like us, you might sometimes have a problem with complex tasks, like trying to drive an ambulance and send a text message at the same time. But hey, at least most of us have figured out the simplest things that get us through the day, right? Except, you know, some of the simple things we've done every day of our lives, like ... What could be simpler than taking a good crap? Even babies are good at it. You might be surprised, then, to find out that even those of us who can burp without throwing up get this wrong every single day.

J-pop Form and definition[edit] In 1990, the Japanese subsidiary of Tower Records defined J-pop as all Japanese music belonging to the Recording Industry Association of Japan except Japanese independent music (which they term "J-indie"); their stores began to use additional classifications, such as J-club, J-punk, J-hip-hop, J-reggae, J-anime, and Visual kei by 2008, after independent musicians started to release works via major labels.[7] Ito Music City, a Japanese record store, adopted expanded classifications including Group Sounds, idol of the 1970s–1980s, enka, folk and established musicians of the 1970s–1980s, in addition to the main J-pop genres.[7] Hide of Greeeen openly described their music genre as J-pop. He said, "I also love rock, hip hop and breakbeats, but my field is consistently J-pop. For example, hip hop musicians learn 'the culture of hip hop' when they begin their career. We are not like those musicians and we love the music as sounds very much.

5 UFO Sightings That Even Non-Crazy People Find Creepy If you want to research UFO sightings, we hope you like bullshit. Because you're about to be drowned in sensationalist books and blogs from UFO enthusiasts who declare every blinking light in the sky to be the opening scenes of Independence Day. It's no coincidence that so many people who encounter UFOs also really want to believe in them. However, buried deep within the U.S. military's own records are some very bizarre, and very well-documented sightings that have to give even a skeptic second thoughts. Are they aliens?

10 Search Engines to Explore the Invisible Web Not everything on the web will show up in a list of search results on Google or Bing; there are lots of places that their web crawlers cannot access. To explore the invisible web, you need to use specialist search engines. Here are our top 12 services to perform a deep internet search. What Is the Invisible Web?

6 Insane Coincidences You Won't Believe Actually Happened America's Freak Luck During the Battle of Midway The Battle of Midway may be remembered as one of the most spectacular naval battles in history and one of the huge turning points in the Pacific theater, but it started out as a pure clusterfuck for the Americans. Despite going into battle with most of Japan's game plan in their pocket thanks to American codebreakers/Bothan spies, the U.S. Navy had little to show for it in the early hours of June 4, 1942.

World's funniest joke The "world's funniest joke" is a term used by Richard Wiseman of the University of Hertfordshire in 2002 to summarize one of the results of his research. For his experiment, named LaughLab, he created a website where people could rate and submit jokes.[1] Purposes of the research included discovering the joke that had the widest appeal and understanding among different cultures, demographics and countries.[citation needed] The History Channel eventually hosted a special on the subject.[citation needed] The jokes 8 Simple Questions You Won't Believe Science Can't Answer The field of science is capable of some amazing things, mostly because it's filled with all the Albert Einsteins and Doogie Howsers the world has produced over the centuries. But it may shock you that some of the most mundane, everyday concepts are as big a mystery to scientists as they are to the average toddler. Things like ... #8.

Bobby Fischer In 1970, "Fischer dominated his contemporaries"[6] by winning the 1970 Interzonal Tournament by a record 3½-point margin and winning 20 consecutive games, including two unprecedented 6–0 sweeps in the Candidates Matches.[7] In July 1971, he became the first official World Chess Federation (FIDE) number-one-ranked player, spending 54 total months at number one. In 1972, he captured the World Chess Championship from Boris Spassky of the USSR in a match, held in Reykjavík, Iceland, publicized as a Cold War confrontation which attracted more worldwide interest than any chess championship before or since.[8] In the 1990s, Fischer patented a modified chess timing system (which added a time increment after each move; now a standard practice in top tournament and match play) and created a new variant of chess called Fischerandom (Chess960).[13] Early years[edit]

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