Jan Warner opens by directly countering the common assumption that grief follows a predictable, linear timeline moving cleanly through distinct stages toward resolution, instead presenting grief as a genuinely unpredictable, non-linear experience.

Why countering this linear assumption matters:

• Many grieving individuals experience additional distress when their own grief doesn't match an expected linear timeline, feeling something is wrong with how they're grieving
• Warner's day-by-day format explicitly acknowledges grief's genuine unpredictability, providing validation rather than an artificial linear framework
• This opening establishes the book's core validating premise, distinguishing it from more prescriptive grief frameworks suggesting fixed stages or timelines

This opening establishes the book's foundational validating premise, directly countering common but often inaccurate assumptions about grief's expected linear progression.