Each school ("madhhab") reflects a unique "al-urf" or culture (a cultural practice that was influenced by traditions), that the classical jurists themselves lived in, when rulings were made. Some suggest that the discipline of "isnad", which developed to validate "hadith" made it relatively easy to record and validate also the rulings of jurists. This, in turn, made them far easier to imitate ("taqlid") than to challenge in new contexts. The argument is, the schools have been more or less frozen for centuries, and reflect a culture that simply no longer exists. Traditional scholars hold that religion is there to regulate human behavior and nurture people's moral side and since human nature has not fundamentally changed since the beginning of Islam a call to modernize the religion is essentially one to relax all laws and institutions.