Treating workers as if they are widgets to be used up and discarded is a central part of the revised relationship between employers and employees that techies proclaim is an innovation as important as chips and software. The model originated in Silicon Valley, but it’s spreading. Old-guard companies are hiring “growth hackers” and building “incubators,” too. They see Silicon Valley as a model of enlightenment and forward thinking, even though this “new” way of working is actually the oldest game in the world: the exploitation of labor by capital. . . The Netflix code has been emulated by countless other companies, including HubSpot, which employed a metric called VORP, or value over replacement player. This brutal idea comes from the world of baseball, where it is used to set prices on players.