Can we already compare the everyday objects of early Stone Age people and those belonging to people who lived at the end of that period? You are right—the difference is obvious. During a relatively short time, people enriched their daily lives with various objects and tools. Already at the end of the Mesolithic period, a new technique of stone processing—surface polishing—came into use. By pouring sand and water, early masters would obtain the necessary shape and a smooth surface with a rotating movement. In addition, they eventually learned how to drill through stone. True, they already knew at that time that a hole could not be drilled into flint, since that would cause it to break. Polished stone artefacts, axes in particular, were also used in the Neolithic period and later, until people mastered the use of iron. Thus, in total, such artefacts were part of daily life for several thousand years.