"Over 50 years ago, NASA was able to get its Saturn V, a rocket nearly as large as Starship, to fly without ever having a failed launch over its 13-launch, six-year operational lifespan. This was a rocket designed with computers less powerful than a Casio watch, built with far less accurate techniques and materials, with check systems and procedures infinitely less sophisticated than anything today. Yet, engineers were able to ensure it never had a launch failure [...]"
https://www.planetearthandbeyond.co/p/spacex-has-finally-figured-out-why