++ for your post.
These are my 0.02 to your rule1.
I am very much a fan of using modules, which make the simple things even simpler, e.g. the List::* modules.
However modules should not be chosen, just because the name smells right.
In the end you can shoot yourself in the knee, e.g. use File::Copy
to copy executable files and end up with permissions reset to default ( see http://abigail1.hates-
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