Hey, at least they're trying to use math! ;) It does make me fear for our justice system, but people are people, and I've realized they're no different anywhere really. The right education can limit our faults but only to a degree.
I also believe that the government very likely has been influenced by American lobbying in the Assange case. The U.S. Is Sweden's largest export outside the EU, and obviously a large importer as well, therefore highly susceptible to pressure.
If they are using Mathematics to make court judgements (which granted, he's not...but he's still a judicial officer making comments about an going case) then it would behoove him to know that probability can only ever be measured between 0 and 1. That's the most OBVIOUS thing about probability I can imagine!
I also believe that the government very likely has been influenced by American lobbying in the Assange case. The U.S. Is Sweden's largest export outside the EU, and obviously a large importer as well, therefore highly susceptible to pressure.