'When a person spends all his time in foreign travel,' noted Seneca, 'he ends by having many acquaintances, but no friends.'

Bad news is perceived as more relevant than good news. Negative information has twice the impact that positive information does. In psychology, this is called negativity bias, and it can be observed in even one-year-old infants. They respond more sensitively to negative stimuli than to positive ones. Adults are no different. A stock falling by ten per cent makes us twice as unhappy as a stock climbing by ten per cent makes us happy. Negativity bias is innate.

We ought to try and understand the 'generators' underlying these events. We ought to be investigating the 'engine room' behind them. Sadly, shockingly few journalists are able to explain these causal relationships, because the processes that shape cultural, intellectual, economic, military, political and environmental events are mostly invisible. They are complex, non-linear and hard for our brains to digest. This is why news corporations focus on the easy stuff: anecdotes, scandals, celebrity gossip and natural disasters. They are cheap to produce and easy to digest.

Imagine you're at a football game. A few spectators in front of you stand on their tiptoes to get a better view of the field. Now everybody else is forced to stand on their tiptoes. The net gain is zero, and now everybody's calves are cramping up. It's exactly the same with news production and consumption. The louder one outlet screams, the louder all the others have to scream too. The more outrageous one side's arguments, the more outrageous the other side's counterblast has to be. The consequence? White noise and a polarised society.

The philosopher Epictetus offered another important argument two thousand years ago: 'You become what you give your attention to ... If you yourself don't choose what thoughts and images you expose yourself to, someone else will.' If you consume the news, you're becoming another person, another character—a worse one than if you filled your mind with wise content. To achieve wisdom, we should choose 'a limited number of master thinkers and digest their works,' suggested the philosopher Seneca.