Anthropologist: Every human culture has taboos against eating certain animals. Some researchers have argued that such taboos originated solely for practical reasons, pointing out, for example, that in many cultures it is taboo to eat domestic animals that provide labor and that are ttherefore worth more alive than dead. But that conclusion is unwarranted; taboos against eating certain animals might instead have arisen for symbolic, ritualistic reasons, and the presence of the taboos might then have led people to find other uses for those animals. In the argument, the anthropologist ['calls an explanation of a phenomenon into question by pointing out that observations cited as evidence supporting it are also compatible with an alternative explanation of the phenomenon', 'describes a hypothesis about the sequence of events involved in the origins of a phenomenon, and then argues that those events occurred in a different sequence', 'establishes that an explanation of a phenomenon is false by demonstrating that the evidence that had been cited in support of that explanation was inadequate', 'argues in support of one explanation of a phenomenon by citing evidence incompatible with a rival explanation']