Here’s what you’ll learn when you read this story: The Inca quipu was a complex system of knotted cords, encoded numerical records and possibly even a full logosyllabic language. New research ...

Seventy years after the invention of a data structure called a hash table, theoreticians have found the most efficient possible configuration for it. About 70 years ago, an engineer at IBM named Hans ...

Here’s what you’ll learn when you read this story: The Inca never built a world of silicon chips or copper-wired circuits, and the high-speed hardware of modern times was something they simply didn’t ...