In How to Make the World Add Up, Tim Harford draws on his experience as both an economist and presenter of the BBC's radio show 'More or Less' to take us deep into the world of disinformation and obfuscation, bad research, and misplaced motivation to find those priceless jewels of data and analysis that make communicating with numbers so rewarding. Through vivid storytelling, he reveals how we can evaluate the claims that surround us with confidence, curiosity, and a healthy level of skepticism. It is a must-read for anyone who cares about understanding the world around them.