71.  The author reasons that the main food source are fishing and hunting, via proposing the example that numerous sites of fish bones, as well as bones of mammals.

72.  First, the numerous sites discovered with bones of fish cannot infer that humans hunted the mammals.

73.  No archaeologists uncover the numerous sites with the bone of mammals, so it is not logical that humans hunted the mammals.

74.  Citing the surveys of the archaeological findings , the author reports that archaeologists discover numerous sites on the Kaliko Island where the bones of fish are discarded .

75.  For example , the sites where bones of fish are found have nothing to do with the hunting .

76.  And any evidence of hunting , such as sites where mammalian bones are found , can not be any better .

77.  To begin with, there is no discovery of sites in the Kaliko Islands where the bones of large mammal were discarded.

78.  The author assumed that large mammals were hunted excessively mainly based on previous archaeological findings of early humans' general reliance on both fishing and hunting, and archaeologists' discovery of numerous sites in the Kaliko Islands where the bones of fish were discarded.

79.  If \

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