The five-stage methodology — capture, clarify, organize, reflect, engage — through which Allen externalized the cognitive work of commitment management into a trusted system, adopted by millions and now meeting the AI age's collision of infinite capability with finite attention.
Getting Things Done, commonly abbreviated GTD, is the complete methodology Allen articulated in his 2001 book of the same name. It rests on five sequential stages: capture everything that has attention, clarify what it means and what action it requires, organize the results into trustworthy lists, reflect regularly on the whole system, and engage fully with whatever action is chosen. The methodology's global influence has been enormous — adopted by Microsoft, the World Bank, the U.S. military, and millions of individual knowledge workers. GTD's distinctive move is treating productivity as a cognitive problem rather than a motivational one: the issue is not how hard you work but how effectively you externalize the mental load of commitments. In the AI age, the methodology's bottleneck assumptions shift, and the components that require most adaptation are the ones practitioners most often skipped.