Where Good Ideas Come From: The Natural History of Innovation

Johnson synthesises his earlier case studies into a general theory of how ideas emerge, organised around seven patterns: the adjacent possible, liquid networks, the slow hunch, serendipity, error, exaptation, and platforms. Each pattern is illustrated with examples from coral reefs to GPS to YouTube, but the underlying argument is consistent — innovation is a network phenomenon, not an individual one, and it thrives in environments that maximise the collision of partial ideas. The concept of the "adjacent possible," borrowed from Stuart Kauffman's complexity theory, is the book's most durable contribution: at any moment, only certain next steps are reachable, and the explorer's job is to expand the boundaries of what is adjacent. The framework is genuinely useful for thinking about product development, organisational design, and why some environments produce more breakthroughs than others.