Here's a quote from an article posted to TSS:

Data Logic and Business Logic Code in PL/SQL will
enable you to considerably reduce the risk

You can't be serious?

Aslak Hellesoy revealed a new toy from the CodeHaus crew: Guantanamo.

It's a tool that takes your code and simply deletes any code that isn't being used by your tests. Yes, you heard me correctly. It deletes code that isn't being tested.

Whether this is a good idea or not, I'll let you decide for yourself. Personally, while I am intrigued by the idea, I'll probably wait until others have tried it out...