Gardner's charm and dry wit aid his cause significantly. His essay on urine therapy is so amusing that only upon reflection does the reader realize that his evidence against it seems not much stronger than the evidence in favor of it; perhaps he felt it too silly to pursue with his usual vigor. This is not the case for his other topics, including "intelligent design" creationism, dream theory, numerology, and reflexology, which he debunks clearly and carefully, while retaining his good-natured humor. Readers new to Gardner's work will find it engaging; old friends will delight that the grand old man of popular science is still at it. Whatever your beliefs, though, try not to think about the title question too hard. --Rob Lightner