Mature trees can reach 10m in height and 6m in spread, so try growing it in a pot to constrain growth.

If high taxes constrain growth, there may not be many proceeds to share out.

Many economies are still de-leveraging, and that might constrain growth and profits, particularly in the developed economies, where leverage has been high.

In so doing, it explains the reasons why many of the current worldwide efforts to reduce governmental deficits will inevitably make them worse and constrain growth and employment.

As those improvements come in, further outperformance becomes more difficult, while some have suggested that debt stuck stubbornly at about 1 billion has constrained growth.