Does Google's fired "manifesto" writer have a legal case?

Former Google engineer James Damore is being held up as a free-speech hero by his supporters, but his dismissal by the tech giant might may be more of an ethical morass than a legal issue.Damore is the center of a controversy over his internal memo that claims biological factors contribute to inequality in the tech sector, such as his view that women have higher "neuroticism" than men. After the memo went public, Google (GOOG) fired Damore, with Google CEO Sundar Pichai denouncing it as "advanci