Even many Germans who back a Holocaust memorial in principle question the form it is most likely to take a labyrinth of some 2, 500 concrete pillars spreading across a plot of 20, 000 square metres between the Brandenburg Gate and the (unmarked) site of Hitler's bunker.
In its simplest form, the principle states that among competing hypotheses leading to the same outcome, the one that is the simplest should be selected.
This bedrock free market principle was reaffirmed this month in the form of a new study from economists Arthur Laffer and Stephen Moore examining state income tax rates.