Don't worry, be happy

Risks, horrible acts and disasters are easily dramatised and cheap to produce. That is why crime is such a popular theme on the news. Studies from the US show that the more time people spend watching news on TV, the more they exaggerate the extent of crime in their cities. A fascinating study about Baltimore showed 84 per cent feared that criminals would harm them or their loved ones, but at the same time almost everybody - 92 per cent - said they felt safe in their neighbourhoods, of which they had first-hand knowledge. They all think there is a lot of crime in Baltimore, but they all think it takes place somewhere else in the city, in the places they know about only from the media.

These results appear again and again in surveys. People think that the environment is being destroyed, that the economy is going to bits and Germans think the reunification of Germany was bad for most people. But they also think that their local environment is good, that their personal finances are improving and that German reunification was good for their personal situation.

At the same time that extreme poverty has been cut in half in developing countries, many people think poverty is on the increase because they see the poverty for the first time on TV. Partly we care about it because poor Vietnamese and Chinese make the shirts we wear. If you don't understand the context, you think that it is the fact they make our shirts that has made them poor. Never mind that people who work for an American multinational in a low-income country earn eight times the average income in that country.

The long-run prospects for the world are amazing. Today we have more people living longer lives in freer societies and we have more scientists alive than lived in all previous periods combined, and they all get an education that is almost as long as a lifetime in earlier periods. Biotechnology, nanotechnology and robotics will create vast improvements. We will be richer, we will live longer and we will be healthier. Continents that we thought were doomed to misery will soon have the living standards we have today.