1. The problem of externalities

Inequality/poverty

This shows that 10% of the world population still live on below $1.90 a day – though the figure has reduced in past three decades.

Inequality is considered a problem because of normative opinions such as – it is an unfair distribution of resources. Also, you could argue there is a diminishing marginal utility of wealth. If all wealth is owned by a small percentage of the population, this reduces net welfare. Redistributing the money to the very poor would enable a greater net utility to society.

Five of the world’s largest companies  Apple, Microsoft, Alphabet, Cisco and Oracle, have a total of $504bn cash savings (2015) This is money unused, whilst people around the world have insufficient food.

Inequality is a problem. However, it is also a problem to know how much we should seek to reduce poverty. Many will agree on the necessity of reducing absolute poverty – but how far should we take it? Should we aim for perfect equality (Communism) or should we aim for equality of opportunity?

Another issue with reducing poverty is that measures to reduce poverty may cause unintended consequences – e.g. higher income tax on high earners may create disincentives to work. Giving benefits to the low paid may reduce incentives to work.

Volatile prices

Some agricultural markets can have volatile prices. A glut in supply can be bad news because the fall in price can lead to lower revenue for farmers. It could even cause some to go out of business because of a bad year. These volatile markets can cause swings in economic fortunes.