Editing Public good (section)

=== Vickrey–Clarke–Groves mechanism ===

[[Vickrey–Clarke–Groves mechanism]]s (VCG) are one of the best-studied procedures for funding public goods. VCG encompasses a wide class of similar mechanisms, but most work focuses on the Clarke Pivot Rule which ensures that all individuals pay into the public good and that the mechanism is individually rational.

The main issue with the VCG mechanism is that it requires a very large amount of information from each user. Participants may not have a detailed sense of their utility function with respect to different funding levels. Compare this with other mechanisms that only require users to provide a single contribution amount. This, among other issues,<ref>{{Cite journal|last1=Rothkopf|first1=Michael|date=2007|title=Thirteen Reasons Why the Vickrey–Clarke–Groves Process Is Not Practical|url=https://pubsonline.informs.org/doi/pdf/10.1287/opre.1070.0384|journal=Operations Research|language=en|volume=55|issue=2|pages=191–197|doi=10.1287/opre.1070.0384}}</ref> has prevented the use of VCG mechanisms in practice. However, it is still possible that VCG mechanisms could be adopted among a set of sophisticated actors.