Positives Many readers found Ian Stewart's exploration of seventeen pivotal equations to be a fascinating and engaging journey through the history and impact of mathematics and science. Reviewers consistently praised the author's ability to provide rich historical context, intriguing backstories, and often amusing anecdotes that illuminate the significance of each equation. The book is lauded for broadening appreciation for how these mathematical concepts have shaped human history and for highlighting their diverse real-world applications, even in unexpected modern contexts. Chapters are often well-structured, offering a clear overview of each equation's meaning, importance, and consequences, making it easy to dip into specific topics. The selection of equations was generally well-received, covering a broad thematic range from fundamental mathematical principles to their implications in various scientific and technological fields.
Negatives Despite its strengths, a recurring criticism among reviewers is the book's inconsistent accessibility for a general audience. While marketed as popular science, many readers, particularly those without a strong scientific or mathematical background, found the explanations too technical and challenging to follow, often requiring multiple re-reads or prior knowledge. Some felt the author struggled to simplify complex mathematical concepts effectively, leading to sections that were either overly dense or too simplified to be truly explanatory. Specific explanations for certain equations were noted as particularly obscure, and some discussions on financial applications were found to be controversial or lacking nuance. Additionally, a few reviewers experienced a decline in engagement towards the later chapters, feeling they lost the initial excitement, and some noted a perceived lack of overarching coherence or flow between the individual equation chapters.
Conclusion Overall, Ian Stewart's book is a mixed bag, offering substantial intellectual rewards but demanding a certain level of commitment from its readers. It is generally not recommended for those seeking an easy, entry-level introduction to mathematics. Instead, the book is best suited for readers who already possess a foundational understanding of mathematical or scientific concepts, or those with a very strong, dedicated interest in these subjects. Individuals with a scientific or engineering background, or even professional mathematicians, are likely to gain the most from its detailed historical insights and broad coverage. While not perfectly balanced in its popularization, for the right reader, it serves as a stimulating and informative exploration of the equations that have profoundly changed our world.
