It turns out that strong typing does not eliminate the need for careful testing. And I have found in my work that the sorts of errors that strong type checking finds are no the errors I worry about.
Programmers are as emotional and irrational as normal people
Computer programs are the most complex things that humans make.
The good thing about reinventing the wheel is that you can get a round one.
Obsolete comments are worse than no comments.
Just because something is a standard doesn’t mean it is the right choice for every application. Like XML, for example.