The default principle—that someone is free to do what he or she desires in the absence of a compelling reason why he or she should not—may make it possible to resolve ethical disputes without recourse to a particular moral framework.
AMA J Ethics. 2015; 17(4):289-296. doi:
10.1001/journalofethics.2015.17.4.spec1-1504.
Julian Savulescu's writing on conscientious objection is guided by an emphasis on the principle of distributive justice that does not allow religion to have a special status as justification.