Predictions built from current knowledge always rest on incomplete data. Modern history therefore works by assembling facts into arguments, without claiming mathematical certainty about human behavior. Admiral Henderson provides the example: his Admiralty papers, reputation, and decisions offer a complicated but still incomplete picture of what he thought. Henderson could tailor the reasons he offered to the audience whose support he needed for a construction program. A public argument may therefore reveal a persuasion strategy rather than a decision-maker's private reasoning. The same source-critical method applies to Billy Mitchell's claims and self-presentation throughout the lecture.
Notable Point · 2:30-6:30
Evidence, audiences, and the historian's limits
A methodological aside uses Admiral Henderson to show why records, actions, and public arguments cannot reveal a naval leader's thinking with certainty.