If you haven't read it, I highly suggest you read Feynman's addendum to the Challenger disaster report: https://www.nasa.gov/history/rogersrep/v2appf.htm https

If you haven't read it, I highly suggest you read Feynman's addendum to the Challenger disaster report: https://www.nasa.gov/history/rogersrep/v2appf.htm https://www.nasa.gov/history/rogersrep/v2appf.htm The words "a safety factor of three" will live with me for every day of my life.