The doctrine of karma and rebirth is another matter. Classical Indian Buddhism accepted this doctrine. These Buddhists believed that death is ordinarily not the end of our existence, that after we die we are reborn, either as humans or as some other fo rm of sentient being (including non-human animals, gods, and the inhabitants of various hells). Which sort of rebirth one attains depends on one's karma, which has to do with the moral quality of the actions one has engaged in. If those acts were primarily morally good, one may be reborn as a human in fo rtunate life circumstances, or even as a god. If one's life was fu ll of acts done out of evil intentions, however, one might end up as a preta or so-called 'hungry ghost'. (These beings are so-called because they are only able to eat fe ces, and to drink urine, pus and blood.) Now this may sound like just the sort of thing that other more familiar religions offe r: a promise of life after death, and a doctrine of retribution for one's sins. So is Buddhism really all that different from those other spiritual traditions? Is it really the case that it only expects us to believe those things fo r which there is obj ective evidence?