Word: backwards
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Dates: during 1990-1999
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Einstein worked hard on the problem, but success eluded him. That was no surprise to his contemporaries, who saw his quest as a quixotic indulgence. They were sure that the greatest of all their colleagues was simply wasting his time, relying on a conceptual approach that was precisely backward. In contrast to just about all other physicists, Einstein was convinced that in the conflict between quantum mechanics and general relativity, it was the former that constituted the crux of the problem. "I must seem like an ostrich who forever buries its head in the relativistic sand in order...
...trouble is, neither Witten nor anyone else knows how many other pieces must fall into place before scientists succeed in solving this greatest of all puzzles. One major reason, observes Columbia University physicist Brian Greene, is that string theory developed backward. "In most theories, physicists first see an overarching idea and then put equations to it." In string theory, says Greene, "we're still trying to figure out the central nugget of truth...
...both right and wrong. Interest in the flesh-and-blood Mohandas Karamchand has faded away. We revere the Mahatma while ignoring half of what he taught. His backward, romantic vision of a simple society seems woolly minded. Much of his ascetic personal philosophy has lost meaning for later generations. Global politics have little place today for his absolute pacificism or gentle tolerance...
Standing in an unstable universe where distances contract and clocks slow down, and time and space are plastic, Albert Einstein cast a wistful backward glance at Isaac Newton. "Fortunate Newton, happy childhood of science!" he wrote. "Nature to him was an open book, whose letters he could read without effort...
...means, for example, that observers might disagree over which of two events happened first--and both could be right. Even more bizarrely, physicists including Stephen Hawking have seriously discussed the possibility that relativity might make it feasible (though not with any technology we know of today) to send objects backward in time...