The conclusion separates mistakes from missed opportunities according to whether the forgone choice left a correctable capability gap or a lasting self-inflicted weakness. The distinction also depends on hindsight because a decision that looked like an imperfect judgment call in the 1920s could reveal its full cost later. Building fewer County-class cruisers was a missed opportunity because other choices could still deliver much of their value. Failing to build sloops was a mistake because those cheaper ships supplied much of the industrial, escort, and mobilization benefit at far lower cost. That comparison explains why superficially similar underinvestment receives a different judgment across ship types. The method is to evaluate the affordable alternatives and the capabilities each preserved.
Notable Point · 1:23:47-1:27:16
Why sloops were a mistake but cruisers an opportunity
The conclusion distinguishes a correctable missed capability from a lasting mistake by comparing expensive cruisers with cheaper sloops that delivered much of the same industrial value.