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But because they are human , even the best graphologists cannot claim complete objectivity . Without full subsumption paths we cannot get complete answers to queries such as " show me all the different kinds of membrane " , " show me all the different kinds of protein complex " . The United States cannot with complete certainty verify that the virus is not being held in places other than the two World Health Organization reference laboratories ; therefore , the deliberate reintroduction of smallpox is regarded as a possibility . Mr. Thompson and the disease centers cannot claim complete credit ; luck has played an important part . We cannot claim complete victory until all our people in South Africa and in Mozambique can enjoy the real fruits of freedom and can live free from poverty , misery , disease and ignorance . In reality we cannot simultaneously complete these activities previously mentioned and aggressively expand to even more institutions . Similarly , Justice O'Connor notes that " nonnamed class members cannot defeat complete diversity .