The West ignored pleas for restraint at the time, then left these countries to fend for themselves. The lesson they have drawn is to tighten policy, hoard demand, hold down their currencies and keep building up foreign reserves as a safety buffer. The net effect is to perpetuate the "global savings glut" that has starved the world of demand, and that some say is the underlying of the cause of the long slump. "I fear that in a world with weak aggregate demand, we may be engaged in a futile competition for a greater share of it," he said.