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Bill Fulkerson

Anatomy of an AI System - 1 views

anatomyof.ai

AI amazon

shared by Bill Fulkerson on 14 Sep 18 - No Cached
  • Bill Fulkerson on 14 Sep 18
     
    "With each interaction, Alexa is training to hear better, to interpret more precisely, to trigger actions that map to the user's commands more accurately, and to build a more complete model of their preferences, habits and desires. What is required to make this possible? Put simply: each small moment of convenience - be it answering a question, turning on a light, or playing a song - requires a vast planetary network, fueled by the extraction of non-renewable materials, labor, and data. The scale of resources required is many magnitudes greater than the energy and labor it would take a human to operate a household appliance or flick a switch. A full accounting for these costs is almost impossible, but it is increasingly important that we grasp the scale and scope if we are to understand and govern the technical infrastructures that thread through our lives. III The Salar, the world's largest flat surface, is located in southwest Bolivia at an altitude of 3,656 meters above sea level. It is a high plateau, covered by a few meters of salt crust which are exceptionally rich in lithium, containing 50% to 70% of the world's lithium reserves. 4 The Salar, alongside the neighboring Atacama regions in Chile and Argentina, are major sites for lithium extraction. This soft, silvery metal is currently used to power mobile connected devices, as a crucial material used for the production of lithium-Ion batteries. It is known as 'grey gold.' Smartphone batteries, for example, usually have less than eight grams of this material. 5 Each Tesla car needs approximately seven kilograms of lithium for its battery pack. 6 All these batteries have a limited lifespan, and once consumed they are thrown away as waste. Amazon reminds users that they cannot open up and repair their Echo, because this will void the warranty. The Amazon Echo is wall-powered, and also has a mobile battery base. This also has a limited lifespan and then must be thrown away as waste. According to the Ay
Steve Bosserman

The 'Fake News' Era and the Problem of the Lazy Brain - 0 views

undark.org/...ews-post-truth-cognition-brain

cognition fake news critical thinking

shared by Steve Bosserman on 26 Dec 16 - No Cached
  • In short, the pontiff said, apologizing for his bluntness: We tend too readily to eat shit — and in a nutshell, he’s right. We have a natural tendency to readily swallow bullshit. We always have and always will. It’s an inherent facet of human cognition
Steve Bosserman

How Neuroscience Can Help Us Treat Trafficked Youth - Pacific Standard - 0 views

psmag.com/...help-us-treat-trafficked-youth

neuroscience youth "human trafficking"

shared by Steve Bosserman on 04 May 18 - No Cached
  • A common misconception is that these youths are choosing to engage in the commercial sex trade. But as recent advances in neuroimaging techniques help scientists unravel the myriad ways that trauma affects the brain, emerging evidence suggests that brain changes resulting from trauma could make young people more vulnerable to exploiters and less receptive to people trying to help. Rather than making a conscious decision to rebel, these kids are simply doing their best to survive, using the adaptive strategies that their brains developed in response to a perilous world.
  • Though the human brain is adaptable throughout life, adaptability is greatest during childhood, as the developing brain responds to the surrounding environment. Survival is the brain's top priority. Young people growing up in dangerous environments will develop brains that are highly responsive to threat cues. In particular, recent studies show that children who have experienced trauma exhibit drastic changes in their amygdala, an area of the brain wired to identify signs of danger.
  • Besides the amygdala, another brain region affected by trauma is the hippocampus, an area involved with contextual learning and memory. The hippocampus takes context into account, so that a person can appropriately respond to the same cues in different situations. For instance, most people would respond differently to hearing gunfire in a shooting range than they would to hearing gunfire in an airport.
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  • McLaughlin's research shows that youth who have experienced trauma have a smaller hippocampus than those who haven't, and are less able to take context into account when they detect a threat cue. When McLaughlin presented images of faces embedded in real-world scenes to kids, those with a history of trauma exhibited less activity in their hippocampus while viewing angry facial expressions. And when given a memory test afterward, they were less able to remember scenes in which they'd identified people displaying anger.
  • Because the brain remains malleable throughout life, it's never too late to mitigate the effects of trauma, McLaughlin says. There are a variety of evidence-based treatments that have proven effective in alleviating the mental-health consequences of trauma. For example, the technique of cognitive reappraisal, a cornerstone of Trauma-Focused Cognitive Behavioral Therapy, can help victims better regulate their emotions by changing the way they view a distressing situation. They can try to imagine that the situation is occurring far away from them, or that they are viewing the event from a removed perspective, as though watching a movie screen. When McLaughlin taught such techniques to young people in her lab, they were able to decrease their emotional reactivity as well as their amygdala response to negative stimuli.
Steve Bosserman

Why we find change so difficult, according to neuroscience - 0 views

www.nbcnews.com/...ording-neuroscience-ncna934011

adaptation change neuroscience

shared by Steve Bosserman on 14 Nov 18 - No Cached
  • “Emotionally and cognitively and executively the brain has established a lot of pathways,” says Dr. Sanam Hafeez, a licensed clinical psychologist and neuropsychologist. “The more you do something the more ingrained it becomes in neural pathways, much like how a computer that stores the sites you visit — when you log onto your browser, they will pop up because you use them a lot. Change is an upheaval of many things and the brain has to work to fit it into an existing framework.”
  • “You absolutely can and should teach your brain to change,” says Hafeez, noting that keeping the brain agile has been shown to help delay aging. “I've done quite a bit of work on the aging process and slowing that down. It starts with changing the aversion to change.”
  • “Let’s say you’re a financial planer who takes up knitting,” says Hafeez. “That is doing something very different, where the brain truly has to adapt new neural pathways. Learning a new skill like this have been shown to ward off dementia, aging and cognitive decline because it regenerates cellular activity. Learn a new language in middle age. You tax your brain by shaking things up and it’s effective for your body in the way HIIT is for your body.”
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  • “Most people won't try something new because they’re deathly afraid of failing,” notes Hafeez. “When you see that something is doable it makes you more receptive and brave. There's that emotional, therapeutic factor that is separate from the neural pathway factor. Over the years, we learn to succeed by viewing our previous failures and successes in a certain light and as we get older we lose sight of that. When you try a new thing it makes you more confident to try to do more new things.”
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