7장 글쓰기란 무엇인가요? 완전한 쓰기 체계는 얼마나 오래되었나요? 로고그래픽 쓰기, 음절 쓰기, 로고음절 쓰기, 알파벳 쓰기란 무엇인가요?

Chapter Seven What is writing? How old are complete writing systems? What is Logographic Writing, syllabic writing, logosyllabic writing, and alphabetic writing?