The previous article said "unit testing isn't enough, you need static types /as well/". This article is extending that argument to "unit testing and static types aren't enough, you need xyz /as well/".
I believe the point is that there will always be something your current test strategy doesn't cover. At what point do you draw the line?
If unit tests and static types don't cover everything, what says that's enough? And can the justification for that, whatever it is, be applied to "unit tests are enough" also?
