[dragonwriter]

> Shouldn't they have thought of that before they created the Courts and named themselves Judges?

Well, (a) that's not how it happened (judges didn't create the courts, and judges don't name themselves judges), and (b) they do have a method for dealing with matters requiring expertise.

Now, its a mechanism that is highly susceptible to resource imbalances between the litigating parties (in which respect it is hardly unique -- lots of things in the legal system are susceptible to that), and its one that has been very effectively abused in the case of forensic (particularly, e.g., fiber analysis) science by the biggest-resource litigant around, the government. But its not a question that has been ignored and not addressed.