Abstract
<p>Some visionaries have ideas too far ahead of their time to be practical. Dick Tracy&rsquo;s wrist watch, with its two-way radio capability, could not be made when his comic strip was popular &mdash; the vacuum tubes would have been a bit big. Now, one can purchase a watch with both video and audio capability. Jack Northrup, the legendary and innovative airplane designer and builder, could not construct his flying wing aircraft at the time of his original conception in the mid-20th century. Despite the many advantages seen by the wise Mr. Northrup, the design had many inflight stability challenges not easily solved by the technology of his day. Now, with modern advances in computer technology, the Northrup Grumman B-2 bomber is the most effective and feared bomber in the world.</p>
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