Final answer:
Dahl suggests that the first encounter with a bandit represents the dangers of venturing into unknown territories, as travelers sought safety in numbers due to the risk of attacks, and society viewed bandits as severe threats.
Step-by-step explanation:
In the first encounter with a bandit, Dahl is trying to convey the dangers of venturing into unknown territories. This idea is supported by the fact that travelers would wait to join a group with an ambassador, proconsul, or quaestor for protection, indicating travel was risky and could involve bandit attacks. The reference to needing the support of locals also allows us to understand the precarious situation of bandits and those they interact with, further emphasizing the risks associated with unknown territories. Additionally, the dangers are highlighted by the societal perception of bandits and the actions taken by the state against those who harbored criminals, demonstrating the severity of the threat posed by bandits.