Accounting devices that artificially reduce the measured fiscal deficit can be analyzed as transactions involving unrecognized assets and liabilities. Different accounting systems recognize different sets of assets and liabilities and are thus vulnerable to different sets of devices. Some...

The problem of climate change seems to be a tragedy of the commons: despite the global benefits of reducing green-house gas emissions, no individual has any incentive to reduce his or her own emissions. Yet many people are making efforts to reduce emissions and putting pressure on businesses and...