This Old Man...
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Labels: Artigos, Death, Old age, Roger Angell, The New Yorker, Velhice
Em terra de cegos.. ninguém é eleito!
“when it comes to voter support, physical appearance matters”
“the reasons we vote for particular candidates could have less to do with politics and more to do with basic cognitive processes—in particular, perception.”
On the Face of It: The Psychology of Electability: here
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Labels: Artigos, Daniel Kahneman, Eleições, Links, Maria Konnikova, Psicologia, The New Yorker
The perception bias / significance chasing [A importância do acreditar]
[...] During the same period, there were ninety-four clinical trials of
acupuncture in the United States, Sweden, and the U.K., and only
fifty-six per cent of these studies found any therapeutic benefits. As
Palmer notes, this wide discrepancy suggests that scientists find ways
to confirm their preferred hypothesis, disregarding what they don’t want
to see. Our beliefs are a form of blindness.
[...] It
feels good to validate a hypothesis,” Ioannidis said. “It feels even
better when you’ve got a financial interest in the idea or your career
depends upon it. And that’s why, even after a claim has been
systematically disproven”—he cites, for instance,
the early work on hormone replacement therapy, or claims involving
various vitamins—“you still see some stubborn researchers citing the
first few studies that show a strong effect. They really want to
believe that it’s true.
[...] scientific research will always be shadowed by a force that can’t be curbed, only contained: sheer randomness.
[...] Such
anomalies demonstrate the slipperiness of empiricism. Although many
scientific ideas generate conflicting results and suffer from falling
effect sizes, they continue to get cited in the textbooks and drive
standard medical practice. Why? Because these ideas seem true. Because
they make sense.
[...] The
decline effect is troubling because it reminds us how difficult it is
to prove anything. We like to pretend that our experiments define the
truth for us. But that’s often not the case. Just because an idea is
true doesn’t mean it can be proved. And just because an idea can be
proved doesn’t mean it’s true. When the experiments are done, we still
have to choose what to believe.
Aqui
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Labels: Artigos, ciência, Links, perception, Preconceito, The New Yorker
a importância do acreditar
The perception bias /Significance chasing
"During the same period, there were ninety-four clinical trials of
acupuncture in the United States, Sweden, and the U.K., and only
fifty-six per cent of these studies found any therapeutic benefits. As
Palmer notes, this wide discrepancy suggests that scientists find ways
to confirm their preferred hypothesis, disregarding what they don’t want
to see. Our beliefs are a form of blindness. [...] It
feels good to validate a hypothesis,” Ioannidis said. “It feels even
better when you’ve got a financial interest in the idea or your career
depends upon it. And that’s why, even after a claim has been
systematically disproven”—he cites, for instance,
the early work on hormone replacement therapy, or claims involving
various vitamins—“you still see some stubborn researchers citing the
first few studies that show a strong effect. They really want to
believe that it’s true. [...] scientific research will always be shadowed by a force that can’t be curbed, only contained: sheer randomness. [...] Such
anomalies demonstrate the slipperiness of empiricism. Although many
scientific ideas generate conflicting results and suffer from falling
effect sizes, they continue to get cited in the textbooks and drive
standard medical practice. Why? Because these ideas seem true. Because
they make sense. [...] The
decline effect is troubling because it reminds us how difficult it is
to prove anything. We like to pretend that our experiments define the
truth for us. But that’s often not the case. Just because an idea is
true doesn’t mean it can be proved. And just because an idea can be
proved doesn’t mean it’s true. When the experiments are done, we still
have to choose what to believe."
Artigo inteiro, aqui
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Labels: Artigos, ciência, Jonah Lehrer, The New Yorker
Time is an illusion_02...
"One of the seats of emotion and memory in the brain is the amygdala, he
explained. When something threatens your life, this area seems to kick
into overdrive, recording every last detail of the experience. The more
detailed the memory, the longer the moment seems to last. “This explains
why we think that time speeds up when we grow older,” Eagleman said—why
childhood summers seem to go on forever, while old age slips by while
we’re dozing. The more familiar the world becomes, the less information
your brain writes down, and the more quickly time seems to pass."
The New Yorker
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Labels: Artigos, Cérebro, David Eagleman, Neurociência, tempo, The New Yorker
Time is an illusion...
"In Eagleman’s essay “Brain Time,” published in the 2009 collection
“What’s Next? Dispatches on the Future of Science,” he borrows a conceit
from Italo Calvino’s “Invisible Cities.” The brain, he writes, is like
Kublai Khan, the great Mongol emperor of the thirteenth century. It sits
enthroned in its skull, “encased in darkness and silence,” at a lofty
remove from brute reality. Messengers stream in from every corner of the
sensory kingdom, bringing word of distant sights, sounds, and smells.
Their reports arrive at different rates, often long out of date, yet the
details are all stitched together into a seamless chronology. The
difference is that Kublai Khan was piecing together the past. The brain
is describing the present—processing reams of disjointed data on the
fly, editing everything down to an instantaneous now. How does it manage
it?"
The New Yorker
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Labels: Artigos, David Eagleman, Italo Calvino, Livros, Neurociência, tempo, The New Yorker

