The prologue opens with an account of Diamond's conversation with Yali, a New Guinean politician. The conversation turned to the differences in power and technology between Yali's people and the Europeans who dominated the land for 200 years, differences that neither of them considered due to any genetic superiority of Europeans. Yali asked, using the local term cargo for inventions and manufactured goods, "Why is it that you white people developed so much cargo and brought it to New Guinea, but we black people had little cargo of our own?" Diamond realized the same question seemed to apply elsewhere: "People of Eurasian origin ... dominate ... the world in wealth and power." Other peoples, after having thrown off colonial domination, still lag in wealth and power. Still others, he says, "have been decimated, subjugated, and in some cases even exterminated by European colonialists."