JC never confirms things, he lets us guess, and when we get close to getting right he changes stuff
HA! A chance to prove you wrong at my own expense. Perhaps this is an elaborate troll by Heffernan to get me to divulge seekrets! Anyways. Because I am in a generous mood.
Your chance to gain (2) of an herb is as follows:
Sqrt(sqrt(rummagingpoints * 100))
So for example:
2 Points = 3.8% Chance
5 Points = 4.7% Chance
50 Points = 8.4% Chance
250 Points = 12.6% Chance
Unlike the other skills this one was determine to be primarily targeted to 'noobies' who are most likely to be out foraging random things and/or getting excited about doing so. As such, you can see that I double sqrt the formula so that min-maxing it was much more difficult and arguably not worht the effort while every little point that a noobie socketed here makes a difference.