David Macaulay is a British-born American illustrator and writer. His works include Cathedral (1973), The Way Things Work (1988), and its updated revisions The New Way Things Work (1998) and The Way Things Work Now (2016). His illustrations have been featured in nonfiction books combining text and illustrations explaining architecture, design, and engineering, and he has written a number of children's fiction books.

The Way Things Work is a 1988 nonfiction book by David Macaulay with technical text by Neil Ardley. It is a whimsical introduction to everyday machines and the scientific principles behind their operation, describing machines as simple as levers and gears and as complicated as radio telescopes and automatic transmissions. Every page consists primarily of one or more large diagrams describing the operation of the relevant machine. These diagrams are informative but playful, in that most show the machines operated, used upon, or represented by woolly mammoths, and are accompanied by anecdotes from a mysterious inventor of the mammoths' (fictive) role in the operation. The book's concept was later developed into two short-lived animated TV shows, a Dorling Kindersley interactive CD-ROM, and a board game. A family "ride" involving animatronics and a 3-D film based on the book was one of the original attractions at the San Francisco Metreon, but closed in 2001.