Diamond begins his book with Yali’s question.I think he does that because it sets out a main purpose for the book. Later on, the whole book is about answering Yali's question. He wants the reader to …show more content…
It is because this date corresponds to the beginning of village life in a few parts of the world, the first undisputed people to come to the Americas, the end of the Pleistocene Era and the last Ice Age, and the start of the Recent Era. Plant and animal domestication began within a few thousand years of 11,000 BCE in at least one part of the world. It is basically the starting point of everything and a suitable start to answer Yali's question.
Diamond characterizes the Great Leap Forward to have occurred sometime around 50,000 years ago when humane at last took off. The Great Leap Forward signifies a leap when humans became more biologically, intellectually, and behaviorally more similar to the modern human. Some definite signs of this include standardized stone tools and the first preserved jewelry(ostrich-shell beads)from east Africa and similar developments found near east and southern Europe.
Some of the major human achievement that characterized this great leap forward include standardized stone tools, the first preserved jewelry found at east African sites, artwork and more complex weapons such as spears-throwers and bows at the Cro-Magnons