题目内容：
Ineverysocietyitisnecessarytohaveageneralsystemoflawstoensurejustice.Lawsaredesignedtomakecertainthatpeople.srightsareprotectedandthatpeoplerespecteachother.srights.Sometimes,however,lawsarepassedwhicharespecifictoatimeorsituation.Forexample,atowninIndianaoncepassedalawmakingitillegaltoshootopenacanoffood.Apparently,somegun-carryingcitizensforgottheircanopenersandnaturallyenough,usedtheirgunstodothejob.Thisdisturbedothercitizens,andendangeredtheirlives,soalawwaspassedtopreventit.Specificlawssometimesremaininexistencelongaftertheproblemhasdisappeared.Thelawsthenseemstrange.Forexample,theIndianalawwasnolongernece
参考答案：