The quote from Roald Dahl's "The Witches" suggests that while certain events or outcomes may seem highly improbable, they are not entirely out of the realm of possibility. This introduces a theme of suspense and anticipation, indicating that even the most unlikely scenarios can unfold in unexpected ways.
Dahl's storytelling often combines elements of fantasy with a touch of realism, inviting readers to consider the boundaries of what can happen. The acknowledgment of possibilities, no matter how remote, encourages imagination and curiosity, making the narrative engaging and thought-provoking.