What is interesting about this is that someone posts some evidence which may indicate that everyone knows less than they imagine and this provokes an outburst of calls for other people to have to take more tests. As the recent BDS paper indicated that shooting practice was helpful in reducing wounding and missing perhaps it would be more useful if we all simply practiced a little bit? It did, of course, also indicate that stalkers with "qualifications" beyond DSC1 also missed and wounded less but I don't think there is a "formal" shooting test in DSC2 but it almost always involves stalkers with more experience and, perhaps, more practice.
As some may recall there were, some years back, calls for compulsory testing in Scotland and amazingly many people on this forum were keen on this. I did a Freedom of Information request to SNH for the details of proven complaints of animal welfare issues, death through firearms use and death from meat hygiene problems caused by stalkers. (plus a few other things I can't remember, I think) Clearly, if stalkers need more training then there must be clear evidence of a problem. SNH reported that there had never been a single case, to their knowledge, of any of these things.
So, while there are a small minority calling for more testing of this, and more control of that, and more interference in the life and business of the other person it is also important to note that there would appear to be no quantitative support for this and, also, that we all know less than we imagine.