For example, elongated stone blades are found not only at Neanderthal sites in Europe and the Near East, but also at sites inhabited by Moderns in the Near East and Africa since at least 100,000 years ago. Blade technologies then disappeared and reappeared cyclically in these areas, and in some regions, such as Australia, they only appeared a few thousand years ago.
例如，延长了的石刃不仅仅在欧洲和近东的穴居人遗址出土，还在近东和非洲距今至少10万年的现代人遗址上被发现。然后制刃的技术在这些地点上周期性地消失和再出现。在某些地区（如澳大利亚），这些技术直到几千年前才出现。