Python -O won’t magically make every script faster, but in the right workloads it’s a free win—here’s how to test it safely.

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.

In the United States, flu season typically lasts from October to May. The flu virus affects people of all ages each year, and symptoms include coughing, runny nose, fever, chills, body aches, and ...