"There will still be a lot of focus on reducing cost and becoming more efficient across the board," he says.

But in the past few years the market has become much more efficient.

Part of the answer may be that our financial system has become dangerously efficient.

She must also become more efficient herself in the use of the time available.

"Food is no longer sacred to us: in becoming too efficient we've changed its nature."

But he also said that industry has become more efficient.

Why did the economy suddenly become less efficient in its use of energy?

In part, that is because the traditional mills have become so much more efficient.

Becoming more efficient at growing food just pushes the problem off.

But during the last 10 or 15 years, manufacturers have become more efficient.