The Brooch: A Symbol of Certainty and Connection in Here One Moment
What Is the Brooch?
The brooch is a small silver piece of jewellery in the shape of a Kronecker delta (δᵢⱼ) — a mathematical symbol that equals 1 when two variables are equal and 0 otherwise. It is worn by the narrator, Cherry Lockwood (later known as the “Death Lady”), pinned to her blouse collar. The brooch is first described in the novel’s opening chapter as an item she frequently touches, “as if to check that it is still there” (Chapter 1). It is a wedding-anniversary gift from her late husband, Ned, a high-school maths teacher who first called her “Kronecker Delta Girl” when they met at a dinner party. Cherry has worn the brooch every day for thirty years (Chapter 107).
Where the Brooch Appears
| Chapter | Context |
|---|---|
| Chapter 1 | The lady boards the flight; the brooch is noted as something she touches repeatedly. |
| Chapter 17 | Cherry struggles to pin the brooch on the morning of the flight, becomes frustrated, throws it, then searches systematically for hours before finding it. |
| Chapter 31 | Leo Vodnik, trying to remember the symbol on the Death Lady’s brooch, thinks it “seemed weirdly relevant” but cannot recall it — he guesses it was an infinity symbol. |
| Chapter 107 | Cherry tells the reader the full story of how Ned gave her the brooch on their first anniversary and how she has worn it ever since. |
How Its Meaning Shifts Throughout the Novel
1. A Token of Mathematical Certainty
The Kronecker delta is a binary operator: it either equals 1 (identity) or 0 (non-identity). For Ned, a mathematician and teacher, the symbol represented the elegant simplicity of logic — a world where answers are either true or false. Giving the brooch to Cherry on their first anniversary was his way of saying, “You are my perfect match; we are identical in the way that matters.” The brooch therefore begins as a private emblem of certainty and belonging.
2. An Anchor of Grief and Memory
After Ned’s death, the brooch transforms into a tangible link to her lost husband. Cherry’s daily ritual of pinning it on is both a compulsion and a comfort. The morning of the flight, when she cannot fasten it, she becomes disproportionately angry — “as if it were the brooch’s fault” — and throws it (Chapter 17). This outburst signals that her grief is not fully processed; the brooch, once a source of stability, now reflects her fraying control.
3. A Source of Frustration and Self-Reflection
The struggle with the brooch in Chapter 17 mirrors Cherry’s broader unease. She has just moved to a new cottage, which feels like “a grave error,” and her body is ageing. The brooch, usually fastened without thought, suddenly resists. When she finds it — after a methodical grid search — she pins it easily again, but the incident leaves her sitting motionless for four hours, “not eating or drinking” (Chapter 17). The brooch here becomes a catalyst for introspection, forcing Cherry to confront her own fragility and the gap between the orderly certainties of mathematics and the messy realities of life.
4. An Unreadable Signal for Others
For passengers like Leo, the brooch is mysterious and unsettling. He cannot recall the symbol’s exact shape, only that it felt “weirdly relevant.” It functions as a visual riddle — the characters sense it means something, but they lack the key to decode it. This parallels the novel’s larger question: can a prediction ever be truly understood, or does it remain a symbol we can only touch, not fully grasp?
Character Connections
-
Cherry Lockwood (character page): The brooch is her most intimate possession. It grounds her in her identity as Ned’s widow and as someone who once loved the clarity of mathematics. Her struggle with it on the flight day foreshadows the emotional upheaval her predictions will cause.
-
Ned Lockwood (deceased): The brooch is his gift, born from his romanticised memory of Cherry in a university lecture. For Ned, the Kronecker delta symbolised the moment he fell in love — a moment of absolute certainty. The brooch keeps his memory alive but also highlights Cherry’s isolation: she is the only one who shares its full meaning.
-
Leo Vodnik (character page): Leo’s inability to name the symbol (he thinks of an infinity sign) shows how the brooch functions as a half-understood sign. His later return to the symbol — prompted when an old friend calls him “Leopold” — suggests that even without comprehension, the brooch exerts a gravitational pull on his subconscious.
-
Neve (Leo’s wife): By thematic contrast, Neve wears her own talisman — a Cartier watch she believes was left by her dead mother. Both objects are physical anchors to lost loved ones, but Neve’s is a found gift, while Cherry’s is a deliberate bequest. The parallel underscores the novel’s exploration of how people impose meaning on objects to cope with uncertainty.
Theme Connections
Fate vs. Free Will (theme page)
The brooch’s mathematical logic seems to support a predetermined universe (δᵢⱼ = 1 means “this is that, without exception”). Yet Cherry’s predictions introduce probabilistic chaos into that system. The brooch represents the yearning for certainty that the novel constantly challenges — a yearning that is both human and, in the end, impossible.
Grief and Loss (theme page)
The brooch is Cherry’s primary grieving object. Her anger when it resists pinning is a displacement of grief — she cannot be angry at Ned for dying, so she becomes angry at his gift. Her systematic search for the brooch mirrors the way she later tries to impose order on death through predictions.
The Illusion of Control (theme page)
Cherry’s brooch ritual is a daily act of control. When it fails — even for a few hours — the illusion is shattered. The novel suggests that no amount of preparation or logic can fully master life’s unpredictability. The brooch, which once seemed a source of stability, becomes proof of how little control anyone truly has.
Guilt and Responsibility (theme page)
Cherry feels guilt over the predictions she makes; the brooch is a silent witness to her actions. Each time she touches it, she may be seeking reassurance that what she did was inevitable — that the brooch’s binary logic (1 = truth) justifies her words. Yet the novel leaves room for doubt, and the brooch itself offers no moral answer.
Mortality and Prediction (theme page)
The brooch’s Kronecker delta is a cold, mathematical symbol placed at the centre of a story about the very human terror of death. For Cherry, it is a memento of love; for the passengers, it is a badge of the Death Lady. The contrast highlights how the same object can represent both comforting memory and ominous prophecy.
Study Questions with Answers
1. Why does Cherry throw the brooch on the morning of the flight, and what does this tell us about her emotional state?
Cherry throws the brooch because she cannot fasten its pin — a task she has performed thousands of times without difficulty. The frustration is “oversized and unexpected” and reflects her underlying agitation about her new home, her ageing body, and the coming event on the plane. The brooch, usually a source of comfort, becomes a lightning rod for her suppressed anxiety and grief. This moment signals that Cherry is not as composed as she outwardly appears.
2. How does the brooch’s mathematical meaning relate to the novel’s treatment of prediction?
The Kronecker delta is a symbol of absolute identity — either something is exactly the same, or it is not. Cherry’s predictions, in contrast, are probabilistic not deterministic: they give specific causes and ages of death, yet the novel shows how those predictions can be changed by human action (e.g., Timmy Binici’s swimming lessons thwarting his predicted drowning). The brooch therefore represents the desire for binary certainty in a world where outcomes are fluid. It is an ironic emblem for a story that ultimately endorses the possibility of change.
3. In Chapter 31, Leo cannot remember the symbol on the brooch and guesses it is an infinity sign. What does this misremembering suggest?
Leo’s guess — an infinity symbol — is intuitively close (both are looping mathematical signs), but it changes the meaning. An infinity sign suggests something timeless and unbounded, while the Kronecker delta is about exact correspondence. Leo’s mistake implies that the passengers project their own meanings onto the Death Lady’s symbols; they see what they expect or fear. It also shows that the brooch’s full significance is private to Cherry, and that the mystery of the predictions resists easy decoding even on a visual level.
4. In what way does the brooch serve as a foil to Neve’s Cartier watch?
Both objects are heirlooms tied to a deceased parent (Neve’s mother; Cherry’s husband). Neve believes her watch was miraculously left for her; Cherry knows exactly who gave her the brooch. Neve’s belief is a form of comforting superstition that an atheist embraces; Cherry’s daily wearing is a deliberate act of memorialisation born from a mathematical mind. The watch is found, the brooch is given. The parallel highlights that people construct meaning from objects regardless of evidence, and that both women use these objects to maintain a connection to the dead.