X Marks the Spot is written from the point of view of the users of mathematics. Since the beginning, mathematical concepts and techniques (such as arithmetic and geometry) were created as tools with a particular purpose like counting sheep and measuring land areas.Understanding those purposes leads to a greater understanding of why mathematics developed as it did. Later mathematical concepts came from a process of abstracting and generalizing earlier mathe...

Writing well, and persuasively, is not only a discipline that can be learned, it is one deeply rooted in the classical arts of rhetoric and polemic. This book introduces the essential skills, rules, and steps for producing effective political prose appropriate to many contexts, from the editorial, the op-ed, and the polemical essay to others both weighty and seemingly slight.