Now, the reason why Marx is important in all of this is because Marx had an acute understanding of how capital-accumulation works. He understood that this perpetual growth machine contains many internal contradictions. For example, one of the foundational contradictions Marx talks about is between use-value and exchange-value. You can see this worked out in the housing situation very clearly. What’s the use-value of a house? Well, it’s a form of shelter, a place of privacy, where one can create a family life. We can list a few other use-values of the house, but the house also has an exchange-value. Remember, when you rent the house, you’re simply renting the house for what it’s worth. But when you buy the house, you now view this home as a form of savings, and after a while, you use the house as a form of speculation.