[bkanber]

NASA's software teams are also remarkably small, and manage to produce code with one of the lowest defect rates of all time. (Space shuttle code had 0 defects in 500k SLOC!)

Just goes to show: quality over quantity!

[0xffff2]

Shuttle's code quality was outstanding, but 0 defects is a myth. There are at least 3 publicly documented bugs in the Shuttle code.

https://space.stackexchange.com/a/37116