Word: weren
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Dates: during 1990-1999
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...paradoxically, he helped develop a gyrocompass for U-boats. During the troubled 1920s, when Jews were being singled out by Hitler's rising Nazi Party as the cause of Germany's defeat and economic woes, Einstein and his "Jewish physics" were a favorite target. Nazis, however, weren't his only foes. For Stalinists, relativity represented rampant capitalist individualism; for some churchmen, it meant ungodly atheism, even though Einstein, who had an impersonal Spinozan view of God, often spoke about trying to understand how the Lord (der Alte, or the Old Man) shaped the universe...
...Einstein and Grossmann wrote a paper in which they put forward the idea that what we think of as gravitational forces are just an expression of the fact that space-time is curved. However, because of a mistake by Einstein (who was quite human and fallible), they weren't able to find the equations that related the curvature of space-time to the mass and energy...
...frontier of physics but at the 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...
...with handle suggests that as of 50,000 B.C., during the Middle Paleolithic, the social brain was not humming very vibrantly. There were only 2 million or 3 million "neurons"--a.k.a., people--scattered across the whole planet, and lacking fiber optics or even postal service, they weren't exactly in constant contact...
...were to their predecessors what Bob Newhart was to Moe Howard. They were children of postwar prosperity, a time when Americans could afford to have anxieties instead of fears. They played Beethoven; they parked in front of the TV; they cradled security blankets. (They played baseball too, but they weren't exactly good at it.) Our Gang could have taken them without breaking a sweat...