Thanks
The answer on there says
"Currently the number is calculated by combining data of how many who fulfills it who lives both close to it, and far from it. Number of found logs is also a factor that we are using."
I can understand using the qualifier stats as a gauge - very logical
However - ' Number of found logs is also a factor'
How is the number of finders relevant - there are a number of factors that could affect how many times it is found that would skew this difficulty rating (the PGC one) - location of cache for example, some challenges may only be found by a few due to where it is hidden - geographically (not often visited place) and relevant to T rating (high up in a tree) - others may be placed in a high tourist area where a lot of cachers come to from all over the world (capital cities)
Also - I presume this is only relevant if it is a common challenge such as 'Find 50 puzzle caches' as you can use other similar challenges to obtain that figure
Sorry not trying to be picky just getting my head round how these things are calculated as I get asked the question myself
cheers