Dates must be checked before accepting a causal claim about naval-gun development. If a weapon was already being designed or tested before the event said to have shaped it, the proposed explanation cannot describe the program's origin. The 16.5-inch G3 work and later 16-inch variant illustrate how one production lineage can contain a significant redesign without making the earlier and later gun identical. Valuable source material can survive a doubtful interpretation, so the sequence of design, testing, and manufacture must be reconstructed independently.
Notable Point · 1:47:49-1:48:49
Using chronology to test claims about naval-gun development
Design and test dates can disprove a neat causal story when the weapon already existed before the event said to have shaped it.