In this paper, I present Ethiopia's Boreda lithic practitioners’ perception of knapping stone as a living vital being and how it informs their selection of colourful stones and transmission of knowledge to apprentices. In particular, lithic practitioners select stones which are perceived to exhibit evidence of their vitality in the form of light and choose particular colours of stone for their association with transformation and community identity. Furthermore, elders use these attributes of stone to assist apprentices in learning to identify good-quality parent material, ensuring longevity of a tool's life.

中文翻译：

---

材料科学家：向石器从业者学习颜色和亮度的重要性

在本文中，我介绍了埃塞俄比亚的 Boreda 石器从业者对敲击石作为活生生的生命的看法，以及它如何影响他们选择五颜六色的石头并将知识传授给学徒。特别是，石器从业者选择的石头被认为以光的形式显示出其生命力的证据，并选择特定颜色的石头来与转变和社区身份相关联。此外，长者利用石头的这些属性来帮助学徒学习识别优质的母材，确保工具的使用寿命。