07 NOV 2017 by ideonexus

 Fall of Atlantis

"But the divine revenge overtook not long after those proud enterprises. For within less than the space of one hundred years, the great Atlantis was utterly lost and destroyed: not by a great earthquake, as your man saith; (for that whole tract is little subject to earthquakes;) but by a particular' deluge or inundation; those countries having, at this day, far greater rivers and far higher mountains to pour down waters, than any part of the old world. But it is true that the same inundation ...
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Memed for the speculation of flood in America.

25 OCT 2017 by ideonexus

 Blockchains

Ownership on the Bitcoin blockchain is determined by a pair of cryptographic keys. The first, called the public key, resides in the blockchain for anyone to see. The second is called the private key, and its owner keeps it safe from view. The two keys have a special mathematical relationship that makes them useful for signing digital messages. Here’s how that happens: Helmut takes a message, combines it with his private key, does some calculations, and ends up with a long number. Anyone who...
Folksonomies: blockchains technology
Folksonomies: blockchains technology
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25 OCT 2017 by ideonexus

 Anger isn't Necessary and Gets In the Way

A prominent author who recently disagreed with me on a technical matter quickly labelled me as belonging to a ‘department of bullshit’. Ouch! How is it possible not to get offended by this sort of thing, especially when it’s coming not from an anonymous troll, but from a famous guy with more than 200,000 followers? By implementing the advice of another Stoic philosopher, the second-century slave-turned-teacher Epictetus, who admonished his students in this way: ‘Remember that it is we...
Folksonomies: anger stoicism
Folksonomies: anger stoicism
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25 OCT 2017 by ideonexus

 Children's Art Has Its Own Logic

Even simple scribbles are meaningful. While it was once thought that kids only scribbled to experience the physical sensation of moving their arm along the page, “now it’s been shown that when children are scribbling … they’re representing through action, not through pictures,” said Boston College’s Winner. “For example, a child might draw a truck by making a line fast across the page and going ‘zoom, zoom,’ and so it doesn’t look like a truck when the child is done, but i...
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This reminds me of Sagan's pumpkin-carving, where he made random cuts and took out chunks to make it scarier with more "bloody guts."

07 AUG 2017 by ideonexus

 The Double Multiplicative Nature of Fraction or Ratio Equ...

Most real-world numbers aren’t always so nice and neat, with wholenumber multiples. If, say, Plant A grew from 2 to 3 feet, and Plant B grew from 6 to 8 feet, then we would say that Plant A grew 1/2 of its original height, whereas Plant B only grew 1/3 of its original height. Such reasoning exemplifies multiplicative thinking and necessarily involves rational numbers. Consider a final example. If you ask a rising 6th grader to compare 13/15 and 14/ 16, chances are that the student will say...
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20 JUL 2017 by ideonexus

 Cooperative Game of Competitive Questioning

Great Cooperative games make the play experience deliberately difficult; the game shouldn't be a cake walk. Mr. Glass's decision, therefore, is for him to assume the role of the game and present himself in opposition to his students—the players. He does this by instructing his students (working in groups designed to get everyone working together, especially those who have struggled in the past) to prepare 30 questions that, in their estimation, adequately assess or measure the topics with w...
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20 JUL 2017 by ideonexus

 Old CRPGs are Unplayable for Modern Gamers

They had five days to play (Ultima IV), and I asked them to make as much progress as they could in that time. When we gathered to debrief in class, a few students explained how they’d overcome some of their difficulties, but the vast majority was utterly flummoxed by the game. As one of them put it, “I’d say for gamers of our generation, an RPG like Ultima IV is boring and pretty much unplayable.” After removing the arrow from my chest, I asked them to explain why. It mostly came dow...
Folksonomies: gaming preservation history
Folksonomies: gaming preservation history
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20 JUN 2017 by ideonexus

 Role of Mirror Neurons in Learning to Read

In terms of early diagnosis, one study of thousands of babies “gaze-following” found that the skill appears first at about 10 to 11 months, and that babies who weren’t proficient at gaze-following by the time they were 1 year old had much less advanced language skills at age 2 (Brooks & Meltzoff , 2005). Another possibility with regard to mirror neuron research is that early and systematic priming (stimulating) of mirror neurons engaged in speech could be a strategy for building th...
Folksonomies: teaching literacy reading
Folksonomies: teaching literacy reading
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22 MAR 2017 by ideonexus

 Myths About Learning Quiz

True or false: When it comes to learning, metacognition (e.g., thinking about thinking) can be just as important as intelligence. RIGHT! True Research on growth mindset by Carol Dweck and others shows that people’s beliefs about the nature of intelligence affect their level of effort and in turn their performance. False What is the best way to learn from some text? Read and reread the text. RIGHT! Explain key ideas of the text to yourself while reading. Restating the text in...
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17 MAR 2017 by ideonexus

 Terrorism of Obscurantism

With Derrida, you can hardly misread him, because he’s so obscure. Every time you say, "He says so and so," he always says, "You misunderstood me." But if you try to figure out the correct interpretation, then that’s not so easy. I once said this to Michel Foucault, who was more hostile to Derrida even than I am, and Foucault said that Derrida practiced the method of obscurantisme terroriste (terrorism of obscurantism). We were speaking French. And I said, "What the hell do you mean by th...
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