An interesting discussion about something we don't really know much about. ( )

This is as much a work of general interest as one of popular science. The coverage of the gravity-related thinking of Einstein (general relativity) struck me as being especially superficial, compared to the earlier treatments of Aristotle (Why not Epicurus / Lucretius?) and Newton. Panek seems to have deliberately decided that the topic calls for an idiosyncratic, even self-indulgent, writing style. Still, much of the book is worth reading, the main exception being the early chapter on religion and other varieties of mythology.