I would be surprised if many or any of our player base can do this very well. There is a reason that the experts used in legal cases and by intelligence agencies spend considerable time learning the skill, and still have questionable accuracy in many cases.
The people have to prove that, among everyone living on this planet, the defendant is the one whose signature matches.
In BM, your population pool is much smaller. And the % of people coming from different countries is much greater, so there are much more obvious divergences noticeable. And as was said, most of those who would apply would likely be active elsewhere, and have therefore provided a great number of example messages to compare.
This makes it much more easier to compare and find similar. And beyond any reasonable doubt isn't a public opinion thing.
I doubt many will bother trying, though. But some people just have very obvious writing styles (for abusing the same expressions or constantly doing the same mistakes).
