Table 4.1. Information needed by classifiers about dissemination of knowledge in a scientific or technical field
Information needed by classifiers	Source of information	Probable comprehensive knowledge and accuracy of this source
Published state-of-the-art information	Experts	����������� Very high
Known, but unpublished, unclass�ified state-of-the-art information in � the United States � friendly countries � unfriendly countries	Experts Experts Experts and intelligence agencies	����������� High ����������� Medium ����������� Low
Extent of foreign knowledge of the unpublished unclassified state-of-the-art information in the United States in � friendly countries � unfriendly countries	Experts and intelligence agencies Experts and intelligence agencies	����������� Medium ����������� Very low
Known, but classified, state-of-the- art information in � the United States � friendly countries � unfriendly countries	Cleared experts Intelligence agencies Intelligence agencies	����������� High^a ����������� Low^b ����������� Very low
^aNeed-to-know considerations keep this from being �very high.� ^bIntelligence agencies generally do not �snoop� on their friends.� Possibly this should be �very low.�