Aristotle vs. Ringelmann: On Superlinear Production in Open Source Software

TL;DR

This paper compares two contrasting theories of group productivity in open source software, analyzing empirical data to understand whether collective output exhibits superlinear gains or diminishing returns as group size increases.

Contribution

It critically examines and reconciles the superlinear and Ringelmann effects in open source production, providing a nuanced understanding of group productivity dynamics.

Findings

Superlinear production effects are possible in open source projects.

The Ringelmann effect and superlinear effects may coexist, not necessarily contradicting each other.

Empirical data suggests a complex relationship between group size and productivity.

Abstract

Organizations exist because they provide additional production gains, in comparison to horizontal ways of allocating resources, such as markets, and the open source movement is deemed to be a new kind of peer-production organization somehow in between hierarchically organized firms and markets. However, to strive as a new kind of organization, open source must provide production gains, which in turn should be measurable. The open source movement is particularly interesting to study for this reason. Here, we confront and discuss two contrasting views, which were reported in the literature recently. On the one hand, Sornette et al. uncovered a superlinear production mechanism, which quantifies Aristotle adage: `the whole is more than the sum of its parts'. On the other hand, Scholtes et al. found opposite results, and referred to Maximilien Ringelmann, a French agricultural engineer (1861-1931), who discovered the tendency for individual members of a group to become increasingly less productive as the size of their group increases. Since Ringelmann, the topic of collective intelligence has interested numbers of researchers in social sciences and social psychology, as well as practitioners in management aiming at improving the performance of their team. In most research and practice case studies, the Ringelmann effect has been found to hold, while, in contrast, the superlinear effect found by Sornette et al.is novel and may challenge common wisdom. Here, we compare these two theories, weigh their strengths and weaknesses, and discuss how they have been tested with empirical data. We find that they may not contradict each other as much as was claimed by Scholtes et al.