Guesstimation 2.0, Solving Today’s Problems on the Back of a Napkin

This instructional guide teaches the art of rapid problem-solving through mathematical estimation and logical approximation. The book demonstrates how to tackle everyday challenges and complex questions using simple calculations, basic mathematical principles, and structured thinking. Written for students, professionals, and curious minds, it emphasizes practical applications over theoretical complexity. The approach empowers readers to make informed decisions and solve problems efficiently using minimal tools and maximum reasoning skills.