Marissa Mayer*, the fierce protector of Google’s look, once quelled an incipient revolt by designers by finally defining what rankled her about a stunning design submitted to her. “It looks like a human was involved in choosing what went where,” Marissa told them. “Google products are machine-driven. They’re created by machines. That’s what makes our products great.”
In other words, the message Google wanted to convey was that its products had no human bias.
*VP at Google, one of their first 20 employees.quoted from "In the Plex: How Google Thinks, Works, and Shapes our Lives", by Steven Levy.