Imagination is more important than knowledge-珍珠湾ART

动脑筋 发表于 2010-3-9 21:11:33

Imagination is more important than knowledge

<br /="/"/><p><strong>A very good article.</strong></p><p align="center"><strong>The World Needs More Rebels Like Einstein <br /="/"/>— Walter Isaacson</strong><span style="display:none;">www.ddhw.com</span></p><p>Albert Einstein, as every kid knows, was a smart guy. <strong>But as we discover when we get older, smart gets you only so far.</strong> It's worth remembering, especially now, that what made Einstein special was his impertinence, his nonconformity, and his distaste for dogma.<span style="display:none;">www.ddhw.com</span></p><p>At a time when the US, worried about competition from China, is again emphasizing math and science education, Einstein's genius reminds us that a society's competitive advantage comes not from teaching the multiplication or periodic tables but from nurturing rebels. Grinds have their place, but unruly geeks change the world. And, as recent research into Einstein's personal papers shows, there's no better glimpse into his offbeat creativity than the way he puzzled out the special theory of relativity.</p><p>As a child, Einstein was slow to speak. This, combined with his cheeky defiance of authority and his distaste for rote learning, led one school master to send him packing and another to dismiss him as a lazy dog.<span style="display:none;">www.ddhw.com</span></p><p>"When I ask myself how it happened that I in particular discovered the relativity theory," Einstein once said, "it seemed to lie in the following circumstance. The ordinary adult never bothers his head about the problems of space and time. But I developed so slowly that I began to wonder about space and time only when I was already grown up."<span style="display:none;">www.ddhw.com</span></p><p>Einstein alienated so many professors that he was unable to earn a doctorate, much less land an academic job. At the age of 26, he was working as a third-class examiner at the Swiss patent office in Bern. As it happens, the patent office provided a better launchpad than any university. On his way to work, Einstein would see trains rolling past the city's 12th-century clock tower, which by then had been synchronized with clocks in the nearby train station, and many of the patent applications he was reviewing proposed using signals traveling at the speed of light to sync up even more distant clocks.<span style="display:none;">www.ddhw.com</span></p><p>By May 1905, Einstein was convinced of two postulates: First, that the laws of physics, including Maxwell's equations for electromagnetic waves, were the same for all frames of reference in constant-velocity motion relative to one another, so there was no way to know whether one observer was at rest and the other in motion. Second, that the speed of light was always the same, regardless of the motion of the source.<span style="display:none;">www.ddhw.com</span></p><p>Yet the two ideas were "seemingly incompatible." He visualized a light beam racing down a railway track. The postulates, taken together, would mean that a man standing next to the track would see the light beam race by him at the same speed that a woman sitting in a railway car would see it — whether she was zooming toward the beam's source or away from it.<span style="display:none;">www.ddhw.com</span></p><p>Then something delightful happened. Einstein went to visit his best friend, Michele Besso, a brilliant but unfocused engineer he had recruited to come work at the patent office. Einstein told Besso about the dilemma. "I'm going to give it up," he said. But as they walked to work,<strong> Einstein took one of the most elegant imaginative leaps in the history of physics</strong>. "I suddenly understood the key to the problem," he later recalled. "Time cannot be absolutely defined."<span style="display:none;">www.ddhw.com</span></p><p>Imagine lightning striking at both ends of a long, fast-moving train. If the light from each strike reaches a person standing on the embankment at the midpoint of the train at the same moment, he would say the strikes happened at the same time. But a person riding inside the train at its midpoint would be a bit closer to the front lightning strike by the time the light arrived; she would say that the light from the front strike reached her first, so the strikes were not simultaneous.</p><p>From that sprang Einstein's special theory of relativity. Two events that are simultaneous in one reference frame may not be simultaneous for someone moving relative to that reference frame. Therefore, time is relative depending on your state of motion. Try to catch up with a light beam and, though the speed of light remains constant, time slows down.<span style="display:none;">www.ddhw.com</span></p><p>Other scientists had come close to his insight, but they were too confined by the dogmas of the day. Einstein alone was impertinent enough to discard the notion of absolute time, one of the sacred tenets of classical physics since Newton. <strong>"Imagination is more important than knowledge,"</strong> Einstein later said. Indeed, if we are ever going to unravel the further mysteries of dark matter, come up with a unified theory, or discover the true nature of energy, we should carve that proclamation above all of our blackboards.<br /="/"/><div></div><span style="display:none;">www.ddhw.com</span><br /="/"/><br /="/"/> <div style="MARGIN-TOP:20px;MARGIN-LEFT:0;MARGIN-BOTTOM:0;float:left"></div></p>

Me 发表于 2010-3-11 09:38:13

Good

xyh 发表于 2010-3-11 19:07:11

回复：Imagination is more important than knowledge

<table cellpadding="8" height="100%" width="100%"><tr><td valign="top"><br /="/"/>对于天才来说，也许Imagination 更重要。因为他们能快速的吸取知识，获得知识对他们来说，轻而易举，不是一个问题。<br /="/"/><br /="/"/>对于绝大多数的常人来说，我认为知识更重要。没有足够的知识，丰富的想象力说得好听一点也许没有用武之地；说得难听一点就是不现实，走火入魔，产生一大批民科。<br /="/"/><br /="/"/>不是各位看法如何？<br /="/"/><br /="/"/> <div style="MARGIN-TOP:20px;MARGIN-LEFT:0;MARGIN-BOTTOM:0;float:left"></div></td></tr></table>

husonghu 发表于 2010-3-11 19:54:35

回复：回复：Imagination is more important than knowledge

<table cellpadding="8" height="100%" width="100%"><tr><td valign="top"><br /="/"/><div>同意.</div><div> </div><div>还有,更多的时候是很难说哪个比哪个更重要. 两者都重要, 对许多人来说. 两者合一,才能有大成.</div><span style="display:none;">www.ddhw.com</span><br /="/"/><br /="/"/> <div style="MARGIN-TOP:20px;MARGIN-LEFT:0;MARGIN-BOTTOM:0;float:left"></div></td></tr></table>

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