[henning]

I like good type systems, too, but they won't save you from bugs that are better addressed by fuzz testing, fault injection testing and adversarial mindset shifts.

[saghm]

Luckily these aren't exclusive! You can do all of those things with a strong type system as well, and get the benefits of all of them.

[rastrian]

100%. Types don’t replace fuzzing, property tests, chaos, or adversarial thinking. They just move one slice of bugs from runtime to compile time and make refactors safer.

In hindsight I should have positioned types/ADTs as one layer in the reliability toolbox, not the toolbox.