The quote suggests that victory in battle is often determined by thorough preparation and analysis of conditions. If forecasts point to a likely win, it indicates that the situation is advantageous for one side over the other. This underscores the importance of careful planning and strategy in achieving success.
Cervantes emphasizes that victory doesn't just arise from chance but results from understanding and leveraging favorable circumstances. Effective calculations and assessments enable one to make informed decisions that lead to triumph in confrontations.