Darren Indyke and Richard Kahn manage Epstein's $630 million estate without salaries. Epstein's estate faces numerous lawsuits and expenses, complicating million-dollar payouts to Indyke and Kahn.

If you’re with-child, you may expect to be greeted by swollen ankles at the end of a long day. But otherwise, the cause of swollen ankles can feel more like a mystery to be solved. Ankles and their ...

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.