I've been thinking about the fact that in some countries—mainly ones run by a Parliament headed by a Prime Minister—there is often a cabinet position known as Minister Without Portfolio.
So I asked myself: What could be the responsibilities of the Minister Without Portfolio? And I answered myself: Why, his only responsibility is to abstain from possessing a portfolio.
Then I asked myself: How does one measure the effectiveness of a Minister Without Portfolio? To which I answered myself: One should perform random, surprise searches of said Minister's office, and if at any time a portfolio is discovered in his possession, he is to be sacked at once.