... must be negated: all effective laws are enforceable or all unenforceable ... laws are ineffective. Any way you ... clearly different from "all enforceable laws are effective."
... because of the contrapositive. No laws -> No crimes, therefore some ... crimes->some laws. In case you don't ... thefts there must be many laws making them crimes. Maybe there ...
... has some crimes has some laws
(2) A ... has many crimes has many laws
Now ... : A society that has no laws has no crimes. ... has some crimes has some laws" is the contrapositive of ... "A society that has no laws has no crimes". ...