When a population saves a lot, the funds are invested outside the country as well as inside. If the Japanese invest in the United States, it pushes their exchange rate down and makes their manufacturing more competitive.

This included examining the impact of the M25 on the town of Ashtead Surrey where Davis grew up. Background
Davis grew up in Ashtead Surrey. He says that one of the best things about presenting on the radio is that "you can look things up on Wikipedia while on air".

In October 2001 Davis took over from Peter Jay as the BBC's economics editor. Evan Davis is also the presenter for the BBC venture-capitalist programme Dragons' Den as well as The Bottom Line a business conversation show also on BBC Radio 4.