Life 3.0: Being Human in the Age of Artificial Intelligence

by Max Tegmark

Although there’s broad agreement among economists that inequality is rising, there’s an interesting controversy about why and whether the trend will continue. Debaters on the left side of the political spectrum often argue that the main cause is globalization and/or economic policies such as tax cuts for the rich. But Erik Brynjolfsson and his MIT collaborator Andrew McAfee argue that the main cause is something else: technology.44 Specifically, they argue that digital technology drives inequality in three different ways. First, by replacing old jobs with ones requiring more skills, technology has rewarded the educated: since the mid-1970s, salaries rose about 25% for those with graduate degrees while the average high school dropout took a 30% pay cut.45 Second, they claim that since the year 2000, an ever-larger share of corporate income has gone to those who own the companies as opposed to those who work there—and that as long as automation continues, we should expect those who own the machines to take a growing fraction of the pie. This edge of capital over labor may be particularly important for the growing digital economy, which tech visionary Nicholas Negroponte defines as moving bits, not atoms. Now that everything from books to movies and tax preparation tools has gone digital, additional copies can be sold worldwide at essentially zero cost, without hiring additional employees. This allows most of the revenue to go to investors rather than workers, and helps expla...