And also how archaeologist should know whether it is a tool or not. Where and how these tools were used and for what.
Also got some information about how to determine whether the stone was shaped by people , or by nature. We should be able to know if that stone was shaped by humans in the past, or if it is like this by nature. Also there are written the ways of how the scientists can determine the stone, before sending it to the professional experiment.
There is a place called Pedra Furada in Brazil, there archaeologists find tens of thousands different stones and although they all look like tools, only some of them were actually tools made by human and the rest was shaped by the mother nature. Although we know the ways how to identify the stone tools, it still is a complicated research, for we cannot say anything exactly. Stone tool analysis is inevitably complicated for tools, cores and flakes could be changed into something completely different at any stage their use - lives. Not always we can say that a certain tool was exactly what we call