Many researchers, following Kenneth Arrow's lead, have concerned themselves with stating various desirable or undesirable criteria and attempting to classify vote-counting systems. This paper moves away from theoretical discussions: the authors illustrate and motivate a variety of alternatives...

It was the question of how best to balance the costs of ordering and of running out of stock against the costs of holding excess inventory that inspired Kenneth Arrow, Theodore Harris, and Jacob Marschak to introduce the (<em>S</em>, <em>s</em>) model in 1951. In this celebratory article, we show how this model...