Earlier quoted context omitted.
>There is no case law in Germany - decisions do usually not bind other courts, even lower courts So is there just a really big rule book? How is legality decided?
Versus the bias of one judge colouring how law should be decided? Judges are supposed to interpret the law, not create it. A strong legislative framework and collaborative atmosphere between the legal and political communities should remove the need for something like case law.
Case law still exists in civil law systems. But it is merely persuasive, unlike in common law systems that have a binding case law.