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An array of Neolithic artifacts, including bracelets, axe heads, chisels, and sharpening instruments. The earliest stone tools were crude, being little greater than a fractured rock. In the Acheulian era, beginning roughly 1.sixty five million years in the past, methods of working these stone into particular shapes, corresponding to hand axes emerged. The Middle Paleolithic, approximately 300,000 years ago, saw the introduction of the prepared-core approach, where a number of blades could presumably be rapidly fashioned from a single core stone.

Nickerson, who operates his personal accounting agency on the incubator, has over 15 years of expertise working with small …