Whisperings: Solo Piano Radio Logical Paradoxes » The Barber Paradox The Barber paradox is attributed to the British philosopher Bertrand Russell. It highlights a fundamental problem in mathematics, exposing an inconsistency in the basic principles on which mathematics is founded. The barber paradox asks us to consider the following situation: In a village, the barber shaves everyone who does not shave himself, but no one else. The question that prompts the paradox is this: Who shaves the barber? No matter how we try to answer this question, we get into trouble. If we say that the barber shaves himself, then we get into trouble. If we say that the barber does not shave himself, then problems also arise. Even if we try to get clever, saying that the barber is a woman, we do not evade the paradox. Both cases, then, are impossible; the barber can neither shave himself nor not shave himself.
Why design fail: the new 50.000 Lebanese Lira banknote design | The Blog of Tarek Atrissi: Arabic Type, Typography, Design and Visual CultureThe Blog of Tarek Atrissi: Arabic Type, Typography, Design and Visual Culture by Tarek Atrissi To celebrate the 70th anniversary of Lebanon’s independence, Lebanon’s Central Bank issued a 50.000 Lebanese Lira banknote, uniquely designed to commemorate the occasion. The new design, released a week before independence day, was heavily criticized by the public, particularly on social media. All these reactions are for a good reason: the design is by all means one big failure. Judging design is not a matter of pointing the “ugly” from the “beautiful”. Let’s start by “design function”: Every design has a function and is conceived to serve a very specific purpose. The other basic function of this banknote design is, of course, being a piece of money to be used. Let’s look as well at another important aspect of design: design process. Such mistakes would never occur if a healthy and professional design process were adopted. Which leads me finally to the “visual aspect” of the design. I am not the kind of person that criticizes the work of other designers easily.
Want to Retain More Memories? Get More Deep Sleep | Biomedical Engineering & Biotechnology News Posted on 06 February 2013 by Aristo Wong. We know that as we age it can become harder for us to remember things; but why is that? Researchers at Berkeley have found a correlation between poor sleep, memory loss, and brain deterioration as we grow older. The researchers found that slow brain waves that are generated during sleep assist in transporting memories from the hippocampus (short term memory storage) to the prefrontal cortex (long term memory storage). In older adults, memories are getting stuck in the hippocampus due to the poor quality of deep sleep. These memories (which have failed to transfer over to the prefrontal cortex) are then overwritten by newer memories. Researchers say healthy adults typically spend about 25% of their night in deep sleep. Right now the results of the study show that on average the quality of older adults’ deep sleep is about 75% worse than that of younger adults.
Free Printable US Currency Sheets | Play Money Using play money is an excellent way to teach children about buying, selling, saving, and budgeting, as well as simple addition and subtraction. Each printable image file below contains three slightly enlarged photocopies of real US currency bills, so you can quickly print double-sided fake money that looks very authentic. You can also print out play money to make bookmarks, gag gifts, origami, or other paper crafts. Click to open each PDF. To make double-sided money, hit "print" and apply the set-up options so that the image is centered on the page. one-dollar bills front one-dollar bills back two-dollar bills front two-dollar bills back five-dollar bills front five-dollar bills back ten-dollar bills front ten-dollar bills back twenty-dollar bills front twenty-dollar bills back fifty-dollar bills front fifty-dollar bills back hundred-dollar bills front hundred-dollar bills back © Had2Know 2010 - 2015
Bionic Muscles Could Find Use in Robots and Cardiac Medicine The tissues of the heart are mechanically tough and electrically conductive, and they keep a strong, rhythmic beat—properties that are tough to mimic in the lab. But a new hybrid material that combines cell-friendly gel, strong, conductive carbon nanotubes, and living cardiac cells mimics natural heart tissue more successfully than previous attempts. Eventually the new material could be useful in both medical and robotic applications. The bionic tissues, made by Ali Khademhosseini, a professor at the Harvard-MIT Division of Health Sciences and Technology in Cambridge, Massachusetts, could serve as muscles for biological machines—moving, programmable living tissues that take synthetic biology beyond single cells. A lot of the things that natural tissues and biological cells can do, such as sense and respond to their environment, are hard for engineers to achieve with the synthetic materials used in conventional robotics.
Olivia Arthur photographs Saudi Arabian life in her book, Jeddah Diaries. Copyright Olivia Arthur/Magnum Photos In 2009, the British Council invited Olivia Arthur to Jeddah, Saudi Arabia, to teach a two-week photography workshop for women. She agreed with the hope that she would also have the chance to make some work of her own. Her photos from that time, as well as two subsequent trips, are collected in her book, Jeddah Diary, published by Fishbar. “I wanted to make a series that would open up some of this strange world to people who don't know about it,” Arthur said via email. But being a photographer in an ultraconservative country with strict rules on what women can and can’t do could be frustrating, Arthur found. Arthur said many foreigners who have lived in the country for years are never invited into a Saudi home. “In the beginning it was frustrating. Arthur’s students often surprised her. To find out more about Arthur’s work or to order a copy of her book, Jeddah Diary, visit her website.
Ultra-stretchy battery to power bionic life Our cyborg future may not be far off. Skip to next paragraph A new, ultra-stretchy battery could be used to power bionic eyes, robotic skins, and other biological implants Yonggang Huang Subscribe Today to the Monitor Click Here for your FREE 30 DAYS ofThe Christian Science MonitorWeekly Digital Edition An ultra-stretchy battery could one day be used to power bionic eyeballs, brain-wave monitoring devices and robotic skins, new research suggests. The new device, which embeds tiny lithium-based batteries in a silicone sheet, can stretch up to three times its initial length and could be recharged wirelessly, Yonggang Huang, study co-author and a mechanical engineer at Northwestern University, wrote to LiveScience in an email. The new battery is described today (Feb. 26) in the journal Nature Communications. Powering devices For decades, science-fiction writers have envisioned dystopian worlds in which humans and machines are seamlessly integrated with bionic implants.
Modern Institute of Reflexology When Donna M. Bean of Gwinnett County, Georgia, decided to train with Modern Institute and become a Reflexologist ... she ran into governmental regulations that required a reflexologist become licensed as a Massage Therapist. Here is her story: I was asked to write my story about overcoming ill conceived governmental reflexology regulations in order to inspire others to follow their heart when confronted with such barriers. I want to let people know that just because someone says something, or the government makes a law, that doesn’t mean you can’t change it. This Chart was contributed by Reflexologist Jay Kaufman whose ancestory is Russian. "If you do what you've always done; You'll get what you've always got." ----- David Steele
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Speed Mathematics People who excel at mathematics use better strategies than the rest of us, they don't necessarily have better brains. We teach simple strategies that can have you multiplying large numbers in your head, doing mental long division, even squaring and finding square roots of numbers off the top of your head. And here is a secret. People equate intelligence with mathematical ability. In other words, if you are able to do lightning calculations in your head, people will think you are intelligent in other areas as well. Here is one of my most important rules of mathematics. The easier the method you use to solve a problem, the faster you will solve it and there is less chance of making a mistake. So, the people who use better methods are faster at getting the answer and make fewer mistakes. The methods we teach are not only fun to use, they are easy to learn. The methods are more than techniques for fast calculation. How well do you know your basic multiplication tables? How did you go?