The ancient tribes historically had the written expression of their lifestyles through the form of cave paintings; and the ancient Oppo tribe is was no exception according to the given argument. However, the paintings were not necessarily an exhaustive reflection of their acual lifestyle. Their might have been incidents or events taht was not documented as a result of being an uncommon practice. If this assumption holds to be true, then the above argument is not a cogent case of change in historic data. Several assumptions and contradiction may prove to be true against the fact that Oppo tribe used both spears and arrows to hunt. Finding an arrowhead from the fossilized bones of ibex that used to be a staple food of this specific tribe does not prove on the statement that the arrowhead was used by the same tribe. It is nowhere mentioned that ibex was not consumed by any other tribe who had the practice of hunting with arrowheads. The likeliness of other tribes consuming ibex for a change is not unlikely. On the other hand, the supporting statement of the inheritance of Oppo tribe of finding place of the fossil vestige strengthens the lieklihood of Oppos hunting ibex with arrowheads. If this is true, the other unstated assumption that Oppos were the only tribe living that specific place can be questioned. Since the exact age of the ibex fossil and Oppo tribes existence is not mentioned here; we can also conclude taht there miht have been anther trib e who used to live in that area prior to the Oppo tribes who were arrowhead hunters of ibex and later the Oppos acquired that area who were users of only spears for hunting purposes. Thus we can establish a counter argument to the given statement that Oppos used both spears and arrows to hunt.