Is telekinesis real? - Emma Bryce

5,168,279 views ・ 2014-09-30

TED-Ed


Please double-click on the English subtitles below to play the video.

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When the infamous fictional character,
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Carrie White, left her high school prom hall ablaze,
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and brought terror upon her town,
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she relied on her powers of telekinesis,
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the ability to manipulate physical objects using the power of the mind alone.
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But while Carrie is just a fictional film based upon a fictional book,
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belief in telekinesis isn't fictional at all.
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For centuries, humans have claimed they really do have the power
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to control the motion of objects using only their minds.
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Levitation, opening doors at will and spoon bending
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are all intriguing examples.
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It happens in the Matrix when Neo freezes bullets midair,
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and it's a skill that Yoda has honed to a T.
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But is telekinesis real,
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or just as fictional as Carrie, Yoda and Neo combined?
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To investigate, we need to evaluate telekinetic claims
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through a scientific lens using the scientific method.
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Telekinesis is part of the discipline called parapsychology,
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in which researchers study psychic phenomena.
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Parapsychologists regard what they do as a science,
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but other scientists disagree.
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Let's start with a few basic observations.
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Observation #1:
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While there are loads of anecdotes out there about telekinesis,
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there's no scientific proof that it exists;
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no studies conducted according to the scientific method
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and repeated under lab conditions can show that its real.
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In the 1930s, the so-called father of parapsychology, Joseph Banks Rhine,
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tested in the lab whether people could use telekinesis
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to make a dice roll the way they wanted it to.
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But afterwards, scientists couldn't replicate his results,
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and since replication is key to proving an idea,
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that was a problem.
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Aside from scientists,
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there are also countless self-proclaimed telekinetics,
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but all have been exposed as tricksters,
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or can't perform under conditions where they're not totally in control,
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suggesting that they manipulate the situation to get the results they want.
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Today, there's even a huge stash of prize money available from lots of organizations
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for anyone who can prove that psychic abilities, like telekinesis, are real.
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But these riches remain unclaimed.
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Observation #2:
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When we investigate telekinesis,
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there's no consensus about what exactly is being measured.
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Are powerful, Yoda-like brainwaves at work perhaps?
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Since nobody agrees, it's difficult to apply a research standard,
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something required in all other types of science
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to test the validity of ideas.
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Observation #3:
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The point of science is to discover the unknown,
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and in the history of scientific investigation,
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it's definitely happened
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that new discoveries have gone against established science,
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and even overturned whole branches of science.
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Such discoveries must be proven extra carefully
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to withstand skepticism.
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In the case of telekinesis,
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the idea goes against established science,
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but lacks the powerful evidence in favor of it.
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Our universe is controlled and explained by the laws of physics,
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and one of these laws tells us that brain waves can't control objects
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because they're neither strong nor far-reaching enough
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to influence anything outside of our skulls.
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Physics also tells us that the only forces that can influence objects from afar
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are magnetic and gravitational.
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Probably the closest thing to telekinesis that science can explain
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is the use of thoughts to control a robotic arm.
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In the brains of stroke patients who can't move,
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researchers can implant tiny wires into the region that controls movement,
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and then train the patient to concentrate on moving a robotic arm,
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which acts like an extension of their minds, and it works.
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It's amazing, but it isn't telekinesis.
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The patients thoughts aren't just vague, undetectable things.
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They're measurable brain signals,
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translated through wires into a robot.
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Science can measure, test and explain the motion,
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and that's how we've shown that this kind of mind control is real.
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Science is a slow process of accumulating
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the evidence that either stands for or against an idea.
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When we stack up evidence,
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we can see which tower grows tallest,
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and in the case of telekinesis, it's not the tower showing that it exists.
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Some say this mystical phenomenon can't fit within the confines of science,
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and that's okay.
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But then telekinesis becomes purely a matter of personal conviction.
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If something can't be assessed scientifically,
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then it can't be described as scientific either.
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So the results of our investigation
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reveal that however much we may want to believe
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that the force really is within us,
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the case for telekinesis remains weak.
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Sorry Neo, Carrie and Yoda.
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Your skills are mind-blowing, but for now, they belong in the movies.
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