Anyone bothered by scale and wanting to be taken seriously should avoid talking about energy. It's a big subject, an important subject, a subject that raises big questions about the future. It's also a subject encompassing enormous amounts of money—capital invested, costs incurred, profits earned, losses suffered. The money relates to need. Seven billion people in an industrializing world need lots of energy. This won't change. The numbers won't shrink. Investment needs The International Energy Agency recently projected 30% growth in global demand for energy in the next 25 years. Other projections put demand growth over that period nearer to 50%. IEA says meeting the need it sees requires...