The 'Wikipedia rule' is a disclosure boundary

Dr. Clarke distinguishes his research practice from the disclosure rule he applies to current or restricted naval programs. Non-public knowledge may shape how he constructs an argument, but he avoids revealing the information that produced it. That constraint requires him to make the strongest argument the public record can support without exposing restricted material behind it. A cautious answer can therefore reflect an operational-security limit, without implying that the research relied only on Wikipedia.