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Are we more than just our bodies? Philosophers argue over zombies.
Philosophers David Chalmers and Daniel Dennett argue over “philosophical zombies,” created to question the nature of human consciousness.
Zombies are a big part of our pop culture. They are both a cathartic exploration of what it means to be human and a vehicle for social commentary. The word “zombie" comes from Haitian folklore and refers to a corpse animated by witchcraft. Facing a horrid life, 17th-century Haitian slaves, who worked on sugar plantations in the French-owned Louisiana area, often considered suicide but were afraid to be trapped in their bodies, wandering the Earth as soulless shells.
In philosophy, this idea of a hypothetical creature that looks like a regular human but has no conscious experiences is known as a “philosophical zombie" or a “p-zombie".
Why do philosophers need zombies?
The concept is kind of a mind trick. Imagine a being that looks and even talks like a human. It goes through all the normal motions of a human and yet has no consciousness. And you would have no idea that it is not like you.
According to philosophers like David Chalmers, p-zombies are an argument against physicalism - the school of thought that everything that makes us human is ultimately derived from our physical characteristics.
Physicalism is based on the success of science in exploring the physical world. According to physicalists, we are essentially intricate arrangements of atoms. Behaviorists, a subset of physicalists, maintain that even all mental processes - thoughts, desires, etc - are just responses to the behaviors of others.
If a p-zombie that is exactly like us, except for the sense of self and consciousness, is logically conceivable, then this possibility could support dualism, an alternative view that sees the world consisting of not just the physical but also the mental.
David Chalmers, Australian philosopher and cognitive scientist, who currently teaches at NYU, thinks that the p-zombie thought experiment can be used to illustrate the “hard problem" of consciousness - “why do physical processes give rise to conscious experience?"
In other words, since a world of zombies is imaginable, all behaving purely at the physical level, why did evolution produce consciousness in humans?
“If there is a possible world which is just like this one except that it contains zombies, then that seems to imply that the existence of consciousness is a further, nonphysical fact about our world. To put it metaphorically, even after determining the physical facts about our world, God had to "do more work" to ensure that we weren't zombies," says Chalmers.
His argument goes like this:
1. Physicalism says that everything in our world is physical.
2. If physicalism is true, a possible metaphysical world must contain everything our regular physical world contains, including consciousness.
3. But we can conceive of a “zombie world" that's like our world physically except for no one in it has consciousness.
4. Physicalism is then proven false.
Physicalists, of course, beg to differ. They argue that any identical copy of our physical world would contain consciousness by necessity.
Daniel Dennett, a noted physicalist philosopher and expert on BigThink, wrote a refutation of “p-zombies" in his commentary, tellingly titled “The Unimagined Preposterousness of Zombies". In it, he proposes that philosophical zombies are logically incoherent.
“When philosophers claim the zombies are conceivable, they invariably underestimate the task of conception (or imagination), and end up imagining something that violates their own definition," says Dennett.
For Dennett's conception of consciousness and free will, check out this video:
A Mercury-bound spacecraft's noisy flyby of our home planet.
- There is no sound in space, but if there was, this is what it might sound like passing by Earth.
- A spacecraft bound for Mercury recorded data while swinging around our planet, and that data was converted into sound.
- Yes, in space no one can hear you scream, but this is still some chill stuff.
First off, let's be clear what we mean by "hear" here. (Here, here!)
Sound, as we know it, requires air. What our ears capture is actually oscillating waves of fluctuating air pressure. Cilia, fibers in our ears, respond to these fluctuations by firing off corresponding clusters of tones at different pitches to our brains. This is what we perceive as sound.
All of which is to say, sound requires air, and space is notoriously void of that. So, in terms of human-perceivable sound, it's silent out there. Nonetheless, there can be cyclical events in space — such as oscillating values in streams of captured data — that can be mapped to pitches, and thus made audible.
Image source: European Space Agency
The European Space Agency's BepiColombo spacecraft took off from Kourou, French Guyana on October 20, 2019, on its way to Mercury. To reduce its speed for the proper trajectory to Mercury, BepiColombo executed a "gravity-assist flyby," slinging itself around the Earth before leaving home. Over the course of its 34-minute flyby, its two data recorders captured five data sets that Italy's National Institute for Astrophysics (INAF) enhanced and converted into sound waves.
Into and out of Earth's shadow
In April, BepiColombo began its closest approach to Earth, ranging from 256,393 kilometers (159,315 miles) to 129,488 kilometers (80,460 miles) away. The audio above starts as BepiColombo begins to sneak into the Earth's shadow facing away from the sun.
The data was captured by BepiColombo's Italian Spring Accelerometer (ISA) instrument. Says Carmelo Magnafico of the ISA team, "When the spacecraft enters the shadow and the force of the Sun disappears, we can hear a slight vibration. The solar panels, previously flexed by the Sun, then find a new balance. Upon exiting the shadow, we can hear the effect again."
In addition to making for some cool sounds, the phenomenon allowed the ISA team to confirm just how sensitive their instrument is. "This is an extraordinary situation," says Carmelo. "Since we started the cruise, we have only been in direct sunshine, so we did not have the possibility to check effectively whether our instrument is measuring the variations of the force of the sunlight."
When the craft arrives at Mercury, the ISA will be tasked with studying the planets gravity.
The second clip is derived from data captured by BepiColombo's MPO-MAG magnetometer, AKA MERMAG, as the craft traveled through Earth's magnetosphere, the area surrounding the planet that's determined by the its magnetic field.
BepiColombo eventually entered the hellish mangentosheath, the region battered by cosmic plasma from the sun before the craft passed into the relatively peaceful magentopause that marks the transition between the magnetosphere and Earth's own magnetic field.
MERMAG will map Mercury's magnetosphere, as well as the magnetic state of the planet's interior. As a secondary objective, it will assess the interaction of the solar wind, Mercury's magnetic field, and the planet, analyzing the dynamics of the magnetosphere and its interaction with Mercury.
Recording session over, BepiColombo is now slipping through space silently with its arrival at Mercury planned for 2025.
A meteorite that smashed into a frozen lake in Michigan may explain the origins of life on Earth, finds study.
- A new paper reveals a meteorite that crashed in Michigan in 2018 contained organic matter.
- The findings support the panspermia theory and could explain the origins of life on Earth.
- The organic compounds on the meteorite were well-preserved.
Meteor streaks through Michigan sky<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="80b7f30820153b35fc515592d7475f53"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/EPu2qnqMYBo?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span>
The meteorite that smashed into Strawberry Lake carried pristine extraterrestrial organic compounds.
Credit: Field Museum
A heated debate is occurring at the University of Miami.
- Students say they were identified with facial recognition technology after a protest at the University of Miami; campus police claim this isn't true.
- Over 60 universities nationwide have banned facial recognition; a few colleges, such as USC, regularly use it.
- Civil rights groups in Miami have called for the University of Miami to have talks on this topic.
Arthur Holland Michel: The Future of Surveillance Technology<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="8c330ab8c4df396f5313be796c0d96da"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/hIC-kaYcq34?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>Americans don't always agree with that assessment, especially on college campuses. Over 60 universities—Harvard, MIT, and UCLA are on the list—have banned facial recognition. Of the few schools that utilize it, USC lets students enter their rooms via face scans; the software also ensures intruders cannot access buildings.</p><p>These are great uses of this technology. You could argue it's how any progress with our devices should work: in service of people. The problem, of course, is that those in power don't tend to stop when they have a little taste of the possibilities.</p><p>University of Miami is the <a href="https://www.forbes.com/sites/rachelsandler/2020/10/27/human-rights-groups-call-on-the-university-of-miami-to-ban-facial-recognition/#a11c8bf2965a" target="_blank">latest school</a> to be embroiled in a battle over facial recognition. The ACLU of Florida was joined by 21 other groups when requesting that the university hold an open forum so that students can express their concerns. A piece of their letter is below. </p><p>This call for action was inspired after a September incident in which students <a href="https://www.miaminewtimes.com/news/university-of-miami-tracked-protesters-with-video-surveillance-11712139" target="_blank">protested</a> returning for in-person classes during the pandemic. The students, concerned about their health, predominantly wore face masks. Still, a number of them were identified, leading to concerns that facial recognition was used. Campus police denied it—the chief even claimed the tech "doesn't work," though that notion <a href="https://www.cnn.com/2020/08/12/tech/face-recognition-masks/index.html" target="_blank">has been refuted</a>—yet civil liberties groups are worried that an invasion of privacy occurred.</p><p>Lia Holland, a member of the digital rights nonprofit <a href="https://www.fightforthefuture.org/news/2020-10-27-20-human-rights-organizations-call-on-university-of-miami-to-ban-facial-recognition-and-meet-f6f2119fd41b/" target="_blank">Fight for the Future</a>, wants answers from school administrators. </p><p style="margin-left: 20px;">"UMiami is struggling to answer to their creepy surveillance practices, and clarify whether they are using their own facial recognition system, or Florida's state facial recognition database."</p>
Credit: Pixel Shot / Adobe Stock<p>The police chief in question, David Rivero, claims overhead surveillance cameras provided identification at the protest. Yet speaking of another case involving facial-recognition software, he's <a href="https://www.miaminewtimes.com/news/university-of-miami-tracked-protesters-with-video-surveillance-11712139" target="_blank">on the record stating</a>, "We were able to [easily] identify and arrest him. We've [detected] a few bad guys that way."</p><p>The letter sent to the Board of Administrators <a href="https://www.fightforthefuture.org/news/2020-10-27-20-human-rights-organizations-call-on-university-of-miami-to-ban-facial-recognition-and-meet-f6f2119fd41b/" target="_blank">includes the following demands</a>: </p><ol><li>Issue a campus-wide policy banning non-personal use of facial recognition technology, and issue a statement that you have done so.</li><li>Immediately schedule an open forum with students and faculty/staff to discuss community concerns and clarify how student activists who participated in First Amendment protected protest activities were identified by campus police.</li><li>Immediately schedule a meeting with the UMiami Employee Student Alliance (UMESA) to address their COVID-19 safety concerns, the subject of the original protest.</li></ol><p>There's no doubt facial-recognition technology has a place in law enforcement. Victims of unsolved crimes are relieved when the perpetrators are brought to justice, regardless of the means. As Michel writes, some police forces are already surveilling large regions of their districts using the Gorgon Stare, a camera used from airplanes. Cameras are ubiquitous, and that's not going to change. </p>As a society, we need honest discussions regarding the application of surveillance. Nearly every citizen in China has <a href="https://www.cnet.com/news/in-china-facial-recognition-public-shaming-and-control-go-hand-in-hand/" target="_blank">already been logged</a> by facial recognition software, which has led to human rights abuses. While the stated intention of this tech by American police is pure, good intentions are known to pave the way...well, we know how that ends. <p>--</p><p><em>Stay in touch with Derek on <a href="http://www.twitter.com/derekberes" target="_blank">Twitter</a> and <a href="https://www.facebook.com/DerekBeresdotcom" target="_blank" rel="noopener noreferrer">Facebook</a>. His new book is</em> "<em><a href="https://www.amazon.com/gp/product/B08KRVMP2M?pf_rd_r=MDJW43337675SZ0X00FH&pf_rd_p=edaba0ee-c2fe-4124-9f5d-b31d6b1bfbee" target="_blank" rel="noopener noreferrer">Hero's Dose: The Case For Psychedelics in Ritual and Therapy</a>."</em></p>
Research suggests that aging affects a brain circuit critical for learning and decision-making.