Street-Fighting Mathematics
- https://mitpress.mit.edu/books/street-fighting-mathematic
- Sanjoy Mahajan
Preface
Too much mathematical rigor teaches rigor mortis: the fear of making an unjustified leap even when it lands on a correct result. Instead of paralysis, have courage—shoot first and ask questions later. Although unwise as public policy, it is a valuable problem-solving philosophy, and it is the theme of this book: how to guess answers without a proof or an exact calculation.