Andrew Chien told Fortune he’s been a computer scientist for 40 years but we’re close to “some seminal moments for how we think about AI and its impact on society.”

OpenAI CEO Sam Altman announced a sweeping 17-gigawatt buildout of compute across multiple sites in partnership with Oracle, Nvidia, and SoftBank.

Andrew Chien told Fortune he’s been a computer scientist for 40 years but we’re close to “some seminal moments for how we think about AI and its impact on society.”

Sam Altman is betting on data centers, gigawatts of power, and trillions of dollars in infrastructure for AI’s future.