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  Why the Stock Market Suddenly Feels So UneasyEnglish

  के द्वारा बनाई गई: roberto.c.alfredo में market-signals पर 19 सित॰ 2026, 7:05 am

  If you have checked a retirement account recently, it may feel as though something changed abruptly.

  That impression is real, although the timeline is slightly deceptive. August 2026 was actually a strong month for American stocks: according to Nasdaq's August market review, the S&P 500 rose 2.7 percent and the Nasdaq-100 gained 4.2 percent, their strongest August performances since 2021.

  Even after September's turbulence, the broader picture is not one of a market in collapse. As of September 18, the S&P 500 remained more than 11 percent higher for 2026 and only about 2 percent below the record high it reached in mid-August.

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  Yankee Hotel Foxtrot: A Record in the DoorwayEnglish

  के द्वारा बनाई गई: roberto.c.alfredo में music-and-culture पर 15 सित॰ 2026, 1:13 am

  There is something peculiar about listening to Yankee Hotel Foxtrot with the dates in mind. Wilco recorded the album largely before September 11, 2001, and delivered it to Reprise in the middle of that year. Yet when the record finally received its conventional release in April 2002, it seemed uncannily suited to the world in which it arrived. Songs were filled with damaged communication, weary affection, American imagery, mechanical interference and moments of almost casual dread. “Jesus, Etc.” contained images of shaking tall buildings and escaping voices. Another song was called “Ashes of American Flags.” The album itself ended with a mysterious radio voice repeating the words “Yankee Hotel Foxtrot” through a growing wall of noise. None of this was written in response to September 11, yet after September 11 it became nearly impossible for listeners not to hear at least some of it through that experience. Contemporary and retrospective criticism alike noticed the effect. The catastrophe seemed to have placed a new frame around music that already existed.

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  The Spacetime Interval: Timelike, Lightlike, and Spacelike SeparationEnglish

  के द्वारा बनाई गई: roberto.c.alfredo में physics पर 30 अग॰ 2026, 10:28 pm

  Two observers watch the same pair of events. They agree that the events happened, but they may assign them different distances and different elapsed times.

  That can sound like a problem. If one observer measures one distance and another measures a different distance, how can both still agree that the events are timelike-, lightlike-, or spacelike-separated?

  The answer is that relativity does not preserve space and time as separate quantities. It preserves a particular combination of them: the spacetime interval.

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  Conos de luz: ¿qué puede afectar a qué en el espacio-tiempo?Español

  के द्वारा बनाई गई: roberto.c.alfredo में physics पर 17 जून 2025, 3:41 am

  Supongamos que un instrumento situado en un lugar emite una señal. Dos segundos después, una estación muy distante registra una alarma.

  ¿Pudo el primer evento haber causado el segundo?

  La respuesta no se desprende de las palabras antes y después. Depende de qué tan separados estén los eventos, cuánto tiempo haya transcurrido entre ellos y si alguna influencia pudo haber recorrido esa distancia a tiempo. La relatividad nos ofrece un diagrama para responder precisamente esa pregunta: el cono de luz.

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  What Gives Us the Right to Guarantee the Floor?English

  के द्वारा बनाई गई: roberto.c.alfredo में society-power-and-economy पर 13 सित॰ 2026, 8:43 pm

  In an earlier essay, I proposed a political bargain that I called Universal Security Capitalism: guarantee a basic floor beneath every person, while leaving the economic ceiling completely open. Nobody should be ruined by illness, hunger, homelessness, or temporary economic failure, but neither should extraordinary wealth be treated as intrinsically objectionable. A person who builds a company worth ten billion dollars and a person who earns very little while repairing old radios, writing novels, studying insects, or playing obscure music should both be permitted to pursue their own ideas of a worthwhile life.

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  Liberal, Classical Liberal, Libertarian, Progressive, and Conservative: A Map of Political TermsEnglish

  के द्वारा बनाई गई: roberto.c.alfredo में society-power-and-economy पर 13 सित॰ 2026, 5:20 pm

  Political labels are supposed to simplify. They allow people to summarize complicated views, identify broad alliances, and describe conflicts without beginning every conversation from first principles. Yet the same labels can also conceal important distinctions. In contemporary American discourse, liberal, classical liberal, libertarian, progressive, and conservative are often spoken of as though they name five positions on a single line. They do not. Some name intellectual traditions, some describe attitudes toward political change, and some function mainly as shorthand for present-day electoral coalitions. Even when two terms overlap in practice, they may be answering different questions.

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