I applaud the work of John Wharington, but there are many troubles with the approach and software as it is now. It is very much version 0.01b .

The goal of such a software should be to discover not only dangerous situations, but also the "guilty" party. Just measuring the distance between 2 FLARMs is by far not good enough.

An excellent example is on page 35, fig 28. This is a day 2 gliders collided in a WGC. Just from the graph, can you find which 2 gliders where involved? The answer is you can't, they have some of the lowest "scores" of the day. Of course you should really look at previous days data of the gliders, but that information is unavailable. I don't think you will learn much.

On top of that, I've experienced the system in action during EGC Lasham. On one day I had the highest score of the day (but during the whole contest one of the lower ones). While I was in the cockpit that day, I already knew I would score very high that day. In a small group, I was close below and behind another glider in very good view of him. During other times I was close to my brother/team partner. Not a single moment or event was dangerous. I had a long discussion with the stewards about this, and I think we all agreed the system needs severe refinement.