Two crashes involving Boeing 737 Max jets have been linked to a software system that helped send the planes into a deadly nose-dive. Our colleague investigated what federal regulators responsible for ensuring the safety of the jets knew about that system. Guest: Natalie Kitroeff, a business reporter for The New York Times. For more information on today’s episode, visit nytimes.com/thedaily.  Background reading: A Times investigation found that the Federal Aviation Administration’s regulatory process, which gave Boeing significant oversight authority, compromised the safety of the 737 Max.