Word: yet
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Dates: during 1990-1999
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Already, in fact, theoretical physicists have succeeded in constructing a framework that offers the best hope yet of integrating gravity with nature's other fundamental forces. This framework is popularly known as string theory because it postulates that the smallest, indivisible components of the universe are not point-like particles but infinitesimal loops that resemble tiny vibrating strings. "String theory," pioneering theorist Edward Witten of Einstein's own Institute for Advanced Study has observed, "is a piece of 21st century physics that fell by chance into the 20th century...
...frontier of mathematics as well. Indeed, it may be that they lack some absolutely essential tool and will have to develop it, just as Isaac Newton was pushed by his investigations of the laws of motion to develop the calculus. As if that weren't hard enough, there is yet another major impediment to progress: unlike quantum mechanics, string theory and its offshoots have developed in the virtual absence of experimental evidence that could help steer theorists in productive directions...
...literature, things were ready to fall apart on their own, so any excuse to do so--especially one as revered as a theoretical restructuring of the universe--was embraced. In 1919 relativity exploded upon science. In 1922 T.S. Eliot's The Waste Land had a similar effect on literature. Yet when Eliot wrote, "these fragments I have shored against my ruins," people took up the fragments but ignored the shoring...
...daily therapy, that he would never walk under his own power again. For the remainder of his life--through four years as Governor of New York and 12 years as President--the mere act of standing up with his heavy metal braces locked in place would be an ordeal. Yet the paralysis that crippled his body expanded his mind and his sensibilities. After what his wife Eleanor called his trial by fire, he seemed less arrogant, less superficial, more focused, more complex, more interesting. "There had been a plowing up of his nature," Labor Secretary Frances Perkins observed...
...Roosevelt, viewing his support for the welfare state and organized labor as an act of betrayal of his class. Indeed, so angry were many Republican businessmen at Roosevelt that they refused even to say the President's name, referring to him simply as "that man in the White House." Yet, under Roosevelt's wartime leadership, the government entered into the most productive partnership with private enterprise the country had ever seen, bringing top businessmen in to run the production agencies, exempting business from antitrust laws, allowing business to write off the full cost of investments and guaranteeing a substantial profit...