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    » The Chevy Volt Gets 230 mpg? Only if you use bad math.

    Mark Chu-Carroll writes:

    Chevy has announced that for city driving, the Volt will get gas mileage of 230 miles per gallon.

    That’s nonsense. Pure, utter rubbish.

    The trick is that they’re playing with the definition of mileage. In city driving, the Volt is primary an electric car: it’s powered by its batteries which you must recharge every night, not by gasoline. On average, you can drive it for about 40 miles on a full charge before it needs to start using any gasoline.

    The “mileage” figure, as it’s presented, is really meaningless - because it’s being presented for a situation in which the gasoline engine almost never runs at all.

    They compute it by basically saying: “If I fully charge the car battery every night, how far will I drive the car in typical city commuting conditions before it’s consumed a gallon of gas”.

    What if you drive your volt around the city all day? Your mileage will drop to around 50 miles per gallon once you’ve driven more than 40 miles. If you drive your car 100 miles in a day, you’ll consume a bit over a gallon of gas. That’s very impressive. But it’s absolutely not what you’d expect after being told that it gets 230 miles per gallon.



    August 12, 2009, 11:54am  Comments

    » Keanu Reeves visits the 1984 International Teddy Bear Convention

    (via Buzz Feed)



    August 10, 2009, 9:16pm  Comments

    » A Breastfeeding doll



    August 10, 2009, 12:04pm  Comments

    » Super Michael Jackson Bros.



    July 29, 2009, 1:53pm  Comments

    » Kafkaesque conversation with Apple's App Store

    Riverturn’s VoiceCentral app had been available for several months on Apple’s iPhone App Store, but this week Apple removed it and all other apps that connect to Google Voice. Here’s the conversation Riverturn had with a representative from the App Store:

    Richard: “I’m calling to let you know that VoiceCentral has been removed from the App Store because it duplicates features of the iPhone.”

    Me: “I don’t understand that reasoning. By that logic wouldn’t apps like Textfree, Skype, fring, or iCall be considered duplicates?”

    Richard: “I can’t discuss other apps with you.”

    Me: “It’s not the apps themselves I want to discuss just the lack of consistency in rule enforcement.”

    Richard: “I can only say that yours duplicates features of the iPhone and was causing confusion in the user community. It’s against our policy.”

    Me: “So what has changed that it is now against policy? It has been in the store for the last 4 months with no problem. There wasn’t a problem for the 1.5 months prior to that when you were ‘reviewing’ it. And this didn’t come up with any of the updates we submitted after it was already in the store.”

    Richard: “I can’t say - only that yours is not complying with our policy.”

    Me: “Can you tell me what portions of the app were duplicate features?”

    Richard: “I can’t go into granular detail.”

    Me: “Is there something we can change or alter in order to regain compliance and get back in the Store?”

    Richard: “I can’t say.”

    Me: “Well if we can’t figure out the issue then how will we know whether to resubmit the app. And how will we know whether to invest in any other development efforts? Future apps could be impacted.”

    Richard: “I can’t help you with that”

    Me: “So how do we know whether it is still viable for us to consider Apple a partner if this is how the scenario plays out. If you were in my shoes would you continue to invest blood, sweat, tears and money in something that can be killed off at any moment without your say so?”

    Richard: “I understand your point but I can’t help you with that.”

    Me: “Surely someone there at Apple asked you to make this phone call. Can I speak with that person about this?”

    Richard: “I am the only one you can speak with on this subject.”

    Me: “There has to be someone there I can actually have a back and forth with so that we can make some strategic decisions on whether this partnership makes any sense.”

    Richard: “You can only talk to me”

    Me: “Nothing personal since I know you have just been tasked to make this call but we aren’t really talking here. There’s no back and forth and you aren’t allowed to answer any questions. Can I implore you to ask your managers if there is anyone who would be willing to speak with me and have a real conversation? I don’t care if it needs to be off the record or we need to sign another top-secret NDA but we really have nothing to go on at this point. We will need to make business decisions on whether it makes any sense to continue developing.”

    Richard: “I will relay that to my managers.”



    July 29, 2009, 10:19am  Comments

    » How Physicist Build a Bridge

    You start a bridge by sending a small piece of string across a chasm and then feeding it with thicker and thicker pieces of rope, and then construction materials. Physicists at Fermilab’s Wilson Hall had a clever way to do this:

    Now they could call in a construction crew, build scaffolding up twenty stories and just connect the cable like that. Not pretty but it would get the job done. But they wanted something pretty. But wait, things are a little easier. We don’t actually need to get the heavy duty cable across to begin with, we can start with a lightweight string, and use that to pull across increasingly heavy cables. The Niagara Falls Bridge for example started when a young boy flew a kite across the falls.

    Unfortunately kites don’t work inside. Well maybe we could have someone throw a baseball across the gap with the string pinned to it. Maybe but the physicists were more inspired by the 0 brawn approach: two people go up to 20th story offices, each with a ball of string. They drop the balls (holding on to an end) all the way down to the ground 20 stories below. Below a third guy ties the ends together. Wind the string up. voila, we have our bridge.



    July 29, 2009, 9:38am  Comments

    » Humans time blinks so they don't miss information

    From the Telegraph:

    A study of eighteen volunteers found they synchronized their blinks while watching video clips taken from the comedy TV show Mr Bean.

    But the same phenomenon did not occur when they viewed a background video or listened to an audio recording of a Harry Potter book.

    Dr Tamami Nakano, of Tokyo University, said: “We seem to be unconsciously searching for a good timing for a blink to minimize the chance of losing critical information during the blink.”

    A blink lasts for between 100 and 150 milliseconds., with automatically blinks 10 to 15 times a minute to moisten and oxygenate the cornea.

    During a blink, there is no visual input and no light, but people do not consciously recognise everything has momentarily gone dark.

    Dr Nakano, whose findings are published in Proceedings of the Royal Society B, said: “Spontaneous eyeblinks were synchronized both within and across subjects when they viewed the same video stories.

    “This blink synchronization was not observed when they viewed background videos that did not contain any story or when they listened to a narrated story.

    “Thus, the synchronization required a story, but the need to follow a storyline per se was not the cause of synchronization.

    “The blink synchrony occurred only when subjects had to follow a storyline by extracting information from a stream of visual events.”



    July 29, 2009, 9:30am  Comments

    » Swinging your arms makes walking more efficient

    From the Independent:

    The mystery of why people swing their arms while walking rather than holding them still and rigid like the famous silly walk of John Cleese in his Monty Python sketch appears to have been solved. An experiment involving making a group of volunteers take equally silly walks in a laboratory setting has confirmed that arm swinging makes walking more efficient and easier.

    Although it may seem obvious why people swing each of their arms in opposition to their legs, scientists have puzzled over the practice for many decades because it seemed to serve no mechanical function given that the arms do not touch the ground.

    One extreme theory even proposed that arm swinging while walking was hard-wired into the human nervous system and served no modern purpose because it was a vestigial relic left over from when our animal ancestors walked on all fours.

    However, a study based on the movements of 10 volunteers who were asked to perform a series of unnatural walks under experimental conditions has shown that swinging the arms in opposition to the legs significantly increases the efficiency of walking.



    July 29, 2009, 9:15am  Comments

    » Not your standard way of starting a wedding



    July 23, 2009, 7:01pm  Comments

    » Will Shortz explains how he puts together the NYT crossword

    One of his answers in a very interesting Q&A with NYT readers:

    I receive 75-100 freelance crossword submissions a week, from which I select my favorites for publication in The Times. Some of the contributors are frequent, others not. Since the payment is modest ($200 for a weekday puzzle, $1,000 for a Sunday), most contributors make crosswords mainly for the pleasure of doing so and for seeing their names in print. More than 100 different contributors appear in The Times each year.

    When I select a puzzle for publication, I factcheck it (of course) and edit the clues. On average about half the clues in a Times puzzle are my own. I edit first for accuracy, because it doesn’t matter how clever or interesting a clue is if it’s wrong. I also edit for the appropriate level of difficulty given the day of the week, as well as for freshness, playfulness, humor and overall balance of subjects.

    After I edit and typeset the puzzles on my handy Mac, I send them to three test solvers, one of whom rechecks the accuracy of every clue and answer again. These testers are Frank Longo (a talented crossword constructor and editor himself), Nancy Schuster (a former crossword editor as well as a national champion solver), and Evie Eysenberg (my “everyman” solver). All three call me with their comments and corrections. I polish the puzzles and send completed electronic files, a week at a time, to The Times, where they are test-solved by a fourth person, Ellen Ripstein, who’s also a former crossword champion. Ellen prepares the files for online publication and other formats, but also serves as another backup.

    This used to be the entire process. Some years ago, though, I noticed a person on the Times’s crossword forum, Martin Herbach, who wrote incredibly literate and knowledgable comments about little flaws in the published puzzles. And I thought, why should I wait until the puzzles are published before getting Martin’s feedback? So after Ellen finishes her work on the files, she sends PDFs of all the puzzles to Martin. Our understanding is that if he sees a problem, he lets me know immediately, in time for me to make a change. And, if he doesn’t, all is well.

    This procedure isn’t 100 percent foolproof for preventing errors, but it’s pretty close.



    July 21, 2009, 12:02pm  Comments

    » A better way to harvest bone marrow

    (via GrrlScientist)



    July 19, 2009, 8:56am  Comments

    » A software engineer on why he won't be going to his high school reunion

    Mark Chu-Carroll’s amazing post:

    As pretty much any reader of this blog who isn’t a total idiot must have figured out by now, I’m a geek. I have been since I was a kid. My dad taught me about bell curves and standard deviations when I was in third grade, and I thought it was pretty much the coolest damn thing I’d ever seen. That’s the kind of kid I was. I was also very small - 5 foot 1 when I started high school, 5 foot three my junior year. Even when I shot up in height, to nearly 5 foot eleven between junior and senior year, I weighed under 120 pounds. So think small, skinny, hyperactive, geek.

    Like most geek kids, I had a rough time in school. I don’t think that my experience was particularly unusual. I know a lot of people who had it worse. But I think that it was slightly worse than average, because the administration in the school system that I went to tolerated an extraordinary amount of violent bullying. Almost every geeky kid gets socially ostracized. Almost all get mocked. In fact, almost all face some physical abuse. The main determinant of just how much physical abuse they get subjected to is the school administration. And the administration at my school really didn’t care: “Bruises? He must just be uncoordinated and bumps into things. Broken fingers? Hey, it happens. We’re sure it must have been an accident. What do you want, an armed guard to follow your kid around?”

    In high school, I didn’t have a single real friend in my graduating class. I had a very few friends who graduated a year before me; I had a few who graduated one or two years after me. But being absolutely literal, there was not a single person in my graduating class who came close to treating me like a friend. Not one.

    Like I said before, the way I was by my classmates in high school was pretty typical for a geek. At best, I was ignored. At worst, I was beaten. In between, I was used as a sort of status enhancer: telling people that you’d seen me doing some supposedly awful or hysterical thing was a common scheme for getting ahead in certain social circles. In the most extreme case, someone painted a swastika onto the street in front of my house with gasoline, and lit it. (In autumn, in a wooded neighborhood.)

    I’m can’t even pretend that I wasn’t an easy target, or that I didn’t respond in a way that encouraged my tormentors. I was a hyperactive geek. My social skills were awful. I don’t think that I deserved the way that I was treated; but at the same time, I do think that my hyperactivity and my lack of social skills both helped make me such a good target, and discouraged anyone from intervening on my behalf.

    But I don’t think that that excuses anyone who abused me. It doesn’t excuse the bastards who made up stories about me. It doesn’t justify the people who threw me against walls. It doesn’t explain the guy who broke my fingers, because he wanted to know what it would sound like. And it doesn’t absolve the people who watched, and laughed while that happened.

    Now it’s twenty five years since I got out of that miserable fucking hell-hole. And people from my high school class are suddenly getting in touch, sending me email, trying to friend me on Facebook, and trying to convince me to bring my family to the reunion. (It’s a picnic reunion, full family invited.) Even some of the people who used to beat the crap out of me on a regular basis are getting in touch as if we’re old friends.

    My reaction to them… What the fuck is wrong with you people? Why would you think that I would want to have anything to do with you? How do you have the chutzpah to act as if we’re old friends? How dare you? I see the RSVP list that one of you sent me, and I literally feel nauseous just remembering your names.



    July 17, 2009, 10:26am  Comments

    Going to Flour + Water for dinner tonight. Can’t wait. http://bit.ly/19f6UR



    July 16, 2009, 5:04pm   Comments

    White girls doing Bill Cosby impressions vs Asians doing Christopher Walken. http://bit.ly/hBzHw vs http://bit.ly/7iuS



    July 16, 2009, 5:04pm   Comments

    » White Girls Doing Bill Cosby Impressions (and Asians doing Christopher Walken)

    and

    (via Buzz Feed)



    July 16, 2009, 4:54pm  Comments