Word: also
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Dates: during 1990-1999
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...doing, Einstein hoped also to resolve the conflict between two competing visions of the universe: the smooth continuum of space-time, where stars and planets reign, as described by his general theory of relativity, and the unseemly jitteriness of the submicroscopic quantum world, where particles hold sway...
...rarely bestows gifts on scientists, however, without exacting a price, and the price, in this case, takes the form of additional complications. Among other things, string theory requires the existence of up to seven dimensions in addition to the by now familiar four (height, width, length and time). It also requires the existence of an entirely new class of subatomic particles, known as supersymmetric particles, or "sparticles." Moreover, there isn't just one string theory but five. Although scientists could rule out none of them, it seemed impossible that all of them could be right...
Einstein was brilliant, of course, but he was also lucky. When he developed the general theory of relativity, he dealt with a world that had just three spatial dimensions plus time. As a result, he could use off-the-shelf mathematics to develop and solve his equations. M theorists can't: their science resides in an 11-dimensional world that is filled with weird objects called branes. Strings, in this nomenclature, are one-dimensional branes; membranes are two-dimensional branes. But there are also higher-dimensional branes that no one, including Witten, quite knows how to deal with. For these...
Over the next decade, this situation could change. Hopes are running high that upcoming experiments at giant particle colliders in the U.S. and Europe will provide the first tantalizing glimpses of supersymmetry. More speculatively, these experiments could also detect the first subtle signs of additional dimensions...
...intellectualism has been as integral a part of American culture as the drive for universal education, and the fact that both have existed concurrently may account for the low status of teachers. In America it is not enough to be smart; one must compensate for one's intelligence by also showing the canniness and real-world power of the cowboy and the pioneer. Einstein did this. He was the first modern intellectual superstar, and he won his stardom in the only way that Americans could accept--by dint of intuitive, not scholarly, intelligence and by having his thought applied...