The UK - and lots of other countries - use "Common Law". https://en.wikipedia.org/wiki/Common_law https://en.wikipedia.org/wiki/Common_law Law is often open t

The UK - and lots of other countries - use "Common Law". https://en.wikipedia.org/wiki/Common_law https://en.wikipedia.org/wiki/Common_law Law is often open to interpretation. Take a look at how most laws are written. It might say "owning a sword is illegal", but then the courts have to interpret whether the sharpened blade you are carrying meets that definition.