Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Many democracies have public health insurance systems that are tax-financed or in which contributions are linked to income. In a recent issue of this journal, Mathias Kifmann provides a model designed to explain this intriguing observation. This comment argues that the suggested explanation is not really convincing. Copyright Springer Science + Business Media B.V. 2007