paradox: the nine greatest enigmas in physics  <b>a fun and fascinating look at great scientific paradoxes.<br /></b><br />throughout history, scientists have come up with theories and ideas that just don&apos;t seem to make sense. these we call paradoxes. the paradoxes al-khalili offers are drawn chiefly from physics and astronomy and represent those that have stumped some of the finest minds. for example, how can a cat be both dead and alive at the same time? why will achilles never beat a tortoise in a race, no matter how fast he runs? and how can a person be ten years older than his twin?<br /><br />with elegant explanations that bring the reader inside the mind of those who&apos;ve developed them, al-khalili helps us to see that, in fact, paradoxes can be solved if seen from the right angle. just as surely as al-khalili narrates the enduring fascination of these classic paradoxes, he reveals their underlying logic. in doing so, he brings to life a select group of the most exciting concepts in human knowledge. <i>paradox</i> is mind-expanding fun.