How dark should a component black-box be? The Reuseware Answer

2007 research paper

In Proc. of 12th International Workshop on Component-Oriented Programming (WCOP’07), 2007
with: Jakob Henriksson, Florian Heidenreich, Steffen Zschaler, and Uwe Aßmann

Short answer: Jet-black with plenty of holes, some of which are not visible to everyone. Long answer: