ABOUT ME: The United States, which has approved two stimulus packages, plans to spend about 4.8 percent of its gross domestic product by 2010. China is planning to spend nearly 6 percent of its G.D.P. on stimulus programs over the next two years, according to the International Monetary Fund. These numbers are still too small. Yet Europe and Japan are lagging further behind. Germany ’s fiscal boost will amount to just 3....