Plot: In the second half of our 2018 special look at capitalism, we delve into the source of humans' greed, the driving force behind capitalism. What exactly is money in the first place? Kabir Sehgal (America) and Tomas Sedlacek (Czech Republic) discuss currency theory, while Ulrike Herrmann (Germany) and Joseph Stiglitz (Columbia University professor) analyze the harmful effects capitalism has on the state of big industries