In testimony before a House committee on Wednesday, Dennis A. Muilenburg, Boeing’s chief executive, said, “If we knew everything back then that we know now, we would have made a different decision.” 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 — and when did they know it? Guest: Natalie Kitroeff, who covers the economy for The Times. For more information on today’s episode, visit nytimes.com/thedaily. Background reading:   Boeing successfully lobbied to reduce government oversight of airplane design.Evidence presented to House investigators on Wednesday revealed that Boeing was aware of potentially “catastrophic” concerns about the 737 Max’s safety before the first crash.