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Video: The Secret Powers of Time

In this brilliant lecture-with-animation, Professor Philip Zimbardo discusses six different ways people's minds are focused on time. Do you focus on the past? If so, are you "Past Positive" (focusing on the good times) or "Past Negative" (focusing on failures)? Do you focus on the present? If so, are you hedonistic or do you just feel it doesn't pay to plan?

As Zimbardo says, "Most of us are here because we're future-oriented. We have learned to work, rather than play -- to resist temptation. But there's another way to be future-oriented. Depending on your religion, life begins after the death of the mortal body. To be future-oriented, you have to trust that when you make a decision about the future, it's gonna carry out." He proceeds to discuss how in different cultures, people have different paces of life, different time orientations, and how that affects their societies' function. He also goes into a detailed discussion of how computers and technology change our perception of time, and what that means for things like technology. Basically, Zimbardo makes a powerful argument that our individual (and collective) perception of time affects our health, wellbeing, and work habits.

There's a fun personal anecdote in the video as well. Zimbardo is Sicilian, and gets into a discussion of how there's an ongoing debate in Italy about splitting the country into two. It appears, at least in part, to boil down to a surprising linguistic anomaly of the Sicilian language -- watch for this around the 3:15 mark and enjoy.

Recommended for those interested in: science, linguistics, religion, time, geography, time, psychology, and sociology.

For the full non-animated lecture by Zimbardo (about 40 minutes), go here. It's worth it. There's also an MP4 download, so those of you behind YouTube blockers may be able to enjoy the lecture at work.

Note: Zimbardo was the primary researcher behind the infamous Stanford Prison Experiment in 1971. Read this interview discussing the project, 40 years later.

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Stradivarius Violins Get Their Distinctive Sound By Mimicking the Human Voice
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iStock

Italian violinist Francesco Geminiani once wrote that a violin's tone should "rival the most perfect human voice." Nearly three centuries later, scientists have confirmed that some of the world's oldest violins do in fact mimic aspects of the human singing voice, a finding which scientists believe proves "the characteristic brilliance of Stradivari violins."

Using speech analysis software, scientists in Taiwan compared the sound produced by 15 antique instruments with recordings of 16 male and female vocalists singing English vowel sounds, The Guardian reports. They discovered that violins made by Andrea Amati and Antonio Stradivari, the pioneers of the instrument, produce similar "formant features" as the singers. The resonance frequencies were similar between Amati violins and bass and baritone singers, while the higher-frequency tones produced by Stradivari instruments were comparable to tenors and contraltos.

Andrea Amati, born in 1505, was the first known violin maker. His design was improved over 100 years later by Antonio Stradivari, whose instruments now sell for several million dollars. "Some Stradivari violins clearly possess female singing qualities, which may contribute to their perceived sweetness and brilliance," Hwan-Ching Tai, an author of the study, told The Guardian.

Their findings were published in the journal Proceedings of the National Academy of Sciences of the United States of America. A 2013 study by Dr. Joseph Nagyvary, a professor emeritus at Texas A&M University, also pointed to a link between the sounds produced by 250-year-old violins and those of a female soprano singer.

According to Vox, a blind test revealed that professional violinists couldn't reliably tell the difference between old violins like "Strads" and modern ones, with most even expressing a preference for the newer instruments. However, the value of these antique instruments can be chalked up to their rarity and history, and many violinists still swear by their exceptional quality.

[h/t The Guardian]

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How Michael Jackson's Dancing Defied the Laws of Biomechanics
Phil Walter, Getty Images
Phil Walter, Getty Images

From the time he debuted the moonwalk on broadcast television in 1983, Michael Jackson transcended the label of "dancer." His moves seemed to defy gravity as well as the normal limits of human flexibility and endurance.

Now we have some scientific evidence for that. Three neurosurgeons from the Postgraduate Institute of Medical Education and Research in Chandigarh, India, recently published a short paper in the Journal of Neurosurgery: Spine that examines just how remarkable one of Jackson's signature moves really was.

In the 1988 video for "Smooth Criminal" and subsequent live performances, Jackson is seen taking a break from his constant motion to stand in place and lean 45 degrees forward. Both he and his dancers keep their backs straight. Biomechanically, it's not really possible for a human to do. And even though he had a little help, the neurosurgeons found it to be a pretty impressive feat.

An illustration of Michael Jackson's 'Smooth Criminal' dance move.
Courtesy of 'Journal of Neurosurgery: Spine.' Copyright Manjul Tripathi, MCh.

Study co-author Manjul Tripathi told CNN that humans can't lean forward much more than 25 or 30 degrees before they risk landing on their faces. (He knows, because he tried it.) Normally, bending involves using the hip as a fulcrum, and erector spinae muscles to support our trunk. When Jackson leaned over, he transferred the fulcrum to the ankle, with the calf and Achilles tendon under strain. Since that part of the body is not equipped to support leaning that far forward without bending, the "Smooth Criminal" move was really a biomechanical illusion. The act was made possible by Jackson's patented shoe, which had a "catch" built under the heel that allowed him to grasp a protruding support on the stage. Secured to the floor, he was able to achieve a 45-degree lean without falling over.

But the neurosurgeons are quick to point out that the shoes are only part of the equation. To achieve the full 45-degree lean, Jackson would have had to have significant core strength as well as a strong Achilles tendon. An average person equipped with the shoe would be unable to do the move.

How does this apply to spinal biomechanics research? The authors point out that many dancers inspired by Jackson are continuing to push the limits of what's possible, leading to injury. In one 2010 paper, researchers surveyed 312 hip-hop dancers and found that 232 of them—almost 75 percent of the cohort—reported a total of 738 injuries over a six-month period. That prevalence could mean neurosurgeons are facing increasingly complex or unique spinal issues. The surgeons hope that awareness of potential risks could help mitigate problems down the road.

[h/t CNN]

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