I've update the linked to page I've updated the linked to page: https://reward.portonvictor.org/predict-prediction-markets-or-hire-google-to-account-salaries-for-scientists-and-free-software-developers/ The main change is that I provide a visual diagram to make it more clear what I am going to do. However, for details refer to the mathematical model, not to the diagram.

Another reason why it's an Ethereum public good Another public Ethereum good of this project is that as stated in the linked document, I am going to improve Gnosis as a side effect of this project. Improving Gnosis is doubtlessly an Ethereum public good. That it may have another source of funding is not at all a reason to challenge this project, because the constitution says nothing about being possibly funded by other sources.

It is an Ethereum public good It is an Ethereum public good first because it incentivizes development of new oracles. Anything that strongly incentivizes development of Ethereum oracles is obviously and doubtlessly an Ethereum public good. The linked document should not describe how prediction markets work, because there are already published articles on this topic, I refer to them. I clearly described some potential use cases: salary to scientists and salary to free software authors (clearly there can be found more use cases, e.g. salary to journalists, support of NGOs, etc.) It does very concretely state what will actually be built: It is given a mathematical model to be implemented in the blockchain. My work is not to create a new smart contract handling prediction markets, but use prediction markets for Ethereum public good (incentivizing creating oracles), possibly using an existing prediction markets smart contracts library like Gnosis or Augur. In short: UNDOUBTFULLY an Ethereum public good, the challenge is wrong in every point.

Challenge Justification I really don't see how this is an Etherum public good. The linked document very loosely describes how prediction markets work and loosely describes some potential usecases, but does not concretely state what will actually be built nor how it qualifies as an Ethereum public good. Further, while I agree that prediction markets are a great tool, there are at least two well funding prediction market frameworks on Ethereum already (Gnosis and Augur). Both have grants programs. These are much more appropriate funding sources for this project, in my opinion.