The document discusses exceptions to the law of demand in economics. It begins by explaining the basic law of demand - that as the price of a product increases, quantity demanded decreases, and vice versa. It then outlines several situations where the law of demand may not apply:
1) Giffen goods, which are inferior goods that people demand more of when the price increases, like potatoes in 19th century Ireland.
2) Conspicuous consumption goods, like diamonds, that people demand more of when the price is higher because it signals higher status.
3) Conspicuous necessities, like TVs and cars, that have become status symbols and people still demand them even as prices rise.