Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

Since the United Nations General Assembly designated 2 April as World Autism Awareness Day (WAAD) in 2007, the UN has worked to promote the full realization of human rights and fundamental freedoms ...

Following the onset of the recent global economic crisis, much of the news, especially in advanced economies, was dire. Unemployment was rising, company profits were falling, financial markets were ...