Elon Musk has a pretty tried-and-true playbook for doing business — he's used it for years to build companies from Tesla to SpaceX. Unfortunately for him, it is not a model that can turn Twitter into a profitable company. It's one that will take the social-media company down in flames. Here's the Musk playbook: Enter a field with very little competition. Claim that your new company will solve a ma

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

Nearly 35 years ago, in January 1983, Apple released the Lisa, the first computer for the workplace with a graphical user interface. The Lisa was a famous flop, but it's still an important moment in Apple history — it set the stage for a conflict between cofounder Steve Jobs and CEO John Sculley that ultimately led to Jobs leaving Apple. Soon, you'll be able to try Lisa's pioneering operating syst

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

An icon in the shape of a person's head and shoulders. It often indicates a user profile.