1. The author’s implicit claim that incinerators are economically advantageous to landfills is poorly supported.
2. Consequently， unless the author can demonstrate that the city will incur expenses that are not covered by the increased revenues from these projects， the author’s concern about these issues is unfounded.
3. First of all， while asserting that real incomes are rising， the author provides no evidence to support this assertion.
4. Moreover， the author fails to consider and rule out other fac