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I don't speak those languages.
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In fact, very few people do.
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They're used only by a handful of people and all those languages are in danger of extinction.
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There are more than 7,000 languages spoken in the world today.
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But about a third of those have fewer than 1,000 speakers
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and according to UNESCO more than 40% of those languages are in danger of extinction.
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In fact, every fortnight, one of the world's languages disappears forever.
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When you say dead language, many people think of Latin.
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But, Latin actually never died.
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It's been spoken continuously since the time of the Caesars,
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but it changed very gradually over 2,000 years until it became French, Spanish, and other romance languages.
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True language death happens when communities switch to other languages
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and parent's stop raising their children to speak their old one.
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When the last elderly speaker dies, the language is unlikely ever to be spoken fluently again.
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If you look at this chart which measures the world's languages in terms of their size and their state of health,
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you can see that most languages are ranked in the middle.
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English, like just a few other dominant languages, is up at the top left-hand corner.
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It's in a really strong state.
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But if your language is down here in the bottom right-hand corner of the graph,
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like Kayapulau from Indonesia or Kuruaya from Brazil, you are are in serious trouble.
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In the bad, old days governments just banned languages they didn't like.
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But sometimes the pressure is more subtle.
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Any teenager growing up in the Soviet Union soon realized that whatever language you spoke at home, mastering Russian was going to be the key to success.
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Citizens of China, including Tibetans,
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as well as speakers of Shanghainese or Cantonese face similar pressure today to focus on Mandarin.
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Once a language is gone, well,
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it usually goes the way of the dodo.
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Just one language has ever come back from the dead: Hebrew.
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It was extinct for two millennia
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but Jewish settlers to Palestine in the early 20th centuries spoke different languages back in Europe
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and they adopted Hebrew on their arrival as their common language.
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It became Israel's official language when the country was fully established in 1948 and now had seven million speakers.
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Now Hebrew is the world's only fully revived language but others are trying.
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Cornish spoken in southwestern England died out two centuries ago.
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But today there are several hundred speakers of the revived language.
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Practicality aside, human diversity is a good thing in it's own right.
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Imagine going on an exciting holiday only to find that the food, clothing, buildings, the people, and yes, the language was just the same as back home.
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Oliver Wendell Holmes put it well,
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"Every language is a temple in which the soul of those who speak it is enshrined."
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Moving that soul of the people from a temple into a museum just isn't the same thing.