Final answer:
Ian Tattersall views the development of language and symbolic thought in Homo sapiens as a crucial and unique aspect of human evolution, leading to the accumulation of shared knowledge and the emergence of human culture.
Step-by-step explanation:
Ian Tattersall views the development of language and symbolic thought in Homo sapiens as a crucial and unique aspect of human evolution. He believes that the ability to invent and communicate through symbolic language was immediately advantageous in terms of biological evolution, leading to the accumulation of shared knowledge, beliefs, and attitudes among human groups. Tattersall also suggests that the development of language and symbolic thought was closely linked to the emergence of human culture.