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Thought Portal

@thoughtportal / thoughtportal.tumblr.com

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Melvyn Bragg and guests discuss the French philosopher Henri Bergson (1859-1941) and his ideas about human experience of time passing and how that differs from a scientific measurement of time, set out in his thesis on 'Time and Free Will' in 1889. He became famous in France and abroad for decades, rivalled only by Einstein and, in the years after the Dreyfus Affair, was the first ever Jewish member of the Académie Française. It's thought his work influenced Proust and Woolf, and the Cubists. He died in 1941 from a cold which, reputedly, he caught while queuing to register as a Jew, refusing the Vichy government's offer of exemption.

With

Keith Ansell-Pearson Professor of Philosophy at the University of Warwick

Emily Thomas Assistant Professor in Philosophy at Durham University

And

Mark Sinclair Reader in Philosophy at the University of Roehampton

Producer: Simon Tillotson

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For the past 21 years, as a lead operator at the California Institute of Technology’s Laser Interferometer Gravitational-Wave Observatory (LIGO), Yellowfly’s son, Corey Gray, has helped to run machines that detect gravitational waves. These violent ripples travel through spacetime like waves created by a pebble dropped into a pond. They can be caused by the collision of two black holes or the collapse of supernova, and there are even some still rippling around from the birth of the universe—you know, small things.

Albert Einstein predicted the existence of gravitational waves over a century ago in his general theory of relativity, but scientists only first observed these ripples in 2015, thanks to LIGO detectors in Livingston, Louisiana, and Hanford, Washington, where Gray works. (It seems like we’re always going to be catching up to Einstein). When Gray, who is a member of the Siksika Nation of Alberta, Canada, found out about this major scientific milestone, he began to think about the press releases. They would no doubt be translated into widely spoken languages—French, Japanese, Mandarin. “That’s when I thought it would be freaking cool to get my mom involved and translate this news into Blackfoot,” Gray says, adding that he isn’t quite fluent in the language himself. “This way she would be a poet for Einstein and astrophysics. A code-talker for gravitational waves.”

Though she now lives in southern California, Yellowfly grew up on a reserve in southern Alberta, Canada. In 1957, she enrolled in the Crowfoot Indian Residential School, as was required by Canadian law. These boarding schools were a long and cruel tradition in Canada, where governments and churches pursued a policy of cultural genocide to stamp out the culture of First Nations people, according to a 2015 report from the country’s Truth and Reconciliation Commission. Yellowfly remembers that the first French word her mother learned during her own boarding school experience was “sauvage,” the slur the nuns lobbed at their indigenous pupils.

“The school wanted to get rid of everything that made us native,” Yellowfly says. “The language, the religion, the ideology—everything that was Blackfoot.” If the nuns caught children speaking their native language, the children weren’t allowed to return home over the weekend, and could be physically punished. Yellowfly remembers how she and her classmates developed an underground whisper network in which they spoke to each other in Blackfoot whenever the nuns were out of sight. These small acts of rebellion helped Yellowfly cling to her identity and language.

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It's hard to believe, but the words “time” and “travel” were never really linked until H.G. Wells' 1895 novel, “The Time Machine.”

James Gleick, author of “Time Travel: A History” discovered that everything from Mr. Peabody's Wayback Machine to Doc Brown's DeLorean can be traced back to Wells. “He wasn't trying to say anything about science,” Gleick says. “In order to tell his story, he invented this gimmick.” And “The Time Machine” explained this gimmick with another bit of sci-fi whimsy: that time is the fourth dimension of space.

“That was ten years before Einstein's first publication of the special theory of relativity,” Gleick says. And once Einstein validated this view of space-time, it inspired countless stories about characters visiting the past and the future.

But these science-fiction stories aren’t always about science: If you look underneath the comedic, time-looping plot of “Groundhog Day,” you’ll find a deeper story about regret. “That's one of the great motivators of time travel. We wonder what if history had unfolded in a completely different way?”

Gleick also tries to imagine what Einstein would have thought about these stories. “For a while, I was hoping I could find a letter from Einstein,” he says. “My dream was that he'd read the 'Time Machine' and said 'Ah ha!' But of course, there's nothing like that. There's no evidence that I could find that Einstein was a sci-fi buff.”

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