Science, technology, engineering, and mathematics--companies everywhere appear to be fighting for workers in the STEM fields to get a head start in building artificial intelligence capability. But as companies continue to push into uncharted, albeit promising, territories around A.I., they're also looking for hires in so-called softer fields to help A.I. mature ethically and free of the unwanted biases that come with their human makers. Speaking at Fortune's Most Powerful Women Summit in Laguna Niguel, Calif. on Tuesday, Fortune 500 and Global 500 executives said they also seek psychologists, philosophers, and interpreters. Executives from IBM, Guardian Life Insurance, and RBC said soft skills are very much in demand as they confront the unintended consequences of nascent technology. "We decided to build a whole division around responsible A.I.," said Ana Paula Assis, president of IBM's Latin America unit.