[taeric]

Of course, the retort there is as much "write simpler programs" as it is "use the type system." I've seen and been a part of many a tangled knot in a type system that, while ostensibly safe, was so much more involved to do the simple things that I think it caused more bugs.

[wereHamster]

I'm not saying strongly typed languages are bugfree. But they eliminate whole classes of bugs. The OP was asking about programming techniques to improve code quality or tools to help with debugging. Well, a type system is such a technique/tool that checks for bugs at compile time.

[taeric]

Indeed. Apologies for what was too trite of a response. I can't explain why, but I have been getting heavily lured by the dynamic typing of lisp, lately. I blame that I am finally watching the SICP lectures online. :)