Pay by the Snowflake? writer Andy Kim described a pilot snow-removal program in the city of Quincy, Mass that used pay for performance: “The city’s Department of Public Works awarded a contract to a snow-removal company that pays per inches of snow plowed, rather than the standard pay scheme based on the number of hours worked. The company is held accountable for plowing certain parts of the city and receives payments dependent on the amount of snow each snowstorm produces, with larger payments for larger storms. Mayor Thomas Koch is expanding the program this winter by enlisting another snow-removal company to cover other parts of the city. Half of the city’s six wards will be covered in this expanded pilot, with the remaining areas plowed by a combination of private companies and city trucks – paid hourly.” A reader asked “How do you measure the amount of snow before it melts down?”