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In testimony before a House committee on Wednesday, Dennis A. Muilenburg, Boeing\u2019s chief executive, said, \u201cIf we knew everything back then that we know now, we would have made a different decision.\u201d Congress is investigating two crashes of Boeing 737 Max jets which killed 346 people, cost the company billions of dollars and raised new questions about government oversight of aviation. So what did Boeing executives know about the dangers of the automated system implicated in the crashes \u2014 and when did they know it? Guest: Natalie Kitroeff, who covers the economy for The Times. For more information on today\u2019s episode, visit nytimes.com/thedaily.\xa0\n\nBackground reading:\xa0\xa0\xa0Boeing successfully lobbied to reduce government oversight of airplane design.Evidence presented to House investigators on Wednesday revealed that Boeing was aware of potentially \u201ccatastrophic\u201d concerns about the 737 Max\u2019s safety before the first crash.