The argument Louise Willder makes in The Book Was Better — the book this essay draws from — is the one every film-literate person has arrived at privately but rarely states plainly: fidelity to a source is not a virtue. It is, more often, a failure of nerve. The examples she marshals are the right ones. Kubrick read King and discarded him. Cuarón took PD James's theological novel and made a film about how we treat migrants. Sally Potter treated Orlando 'as if the book never existed' and produced something Woolf couldn't have imagined. These aren't betrayals. They're the only way the form survives contact with another form. The essay's most useful structural point is that books and films are not versions of each other — they are, as screenwriter Dennis Lehane put it, 'apples and giraffes.' This distinction does real work. A film is not a recording of a novel's events; it is a translation from the verbal to the visual, and translation always involves loss and invention in equal measure. The question isn't whether things were changed — they always are — but whether the new thing justifies itself on its own terms. The 'what if' premise of speculative fiction gets singled out as especially well-suited to this kind of free-handed adaptation, and the argument holds up. Children of Men keeps the central conceit — what if no children were born? — and then builds an entirely different architecture around it. The novel's theological scaffolding is replaced with something rawer and more politically immediate. The film is now, as Willder notes, twenty years old and 'feels fresher each year.' The novel has not aged the same way. Where the essay is strongest is on casting — the place where the gap between a reader's private film and the actual film is most violently exposed. Hitchcock's casting of Anthony Perkins against type in Psycho (where the novel's Norman is physically repellent) is the cleanest example: a deliberate wrongfooting that the film couldn't have done without. The Bonfire of the Vanities counterexample — Bruce Willis as a desiccated English journalist — is the failure mode of the same logic. 'Likable' is not the same as 'right,' and Roger Ebert's observation that cinema is 'a machine for generating empathy' explains why Hollywood keeps making the mistake. The essay lands, perhaps too softly, on Nolan's The Odyssey — acknowledging that Nolan 'did the right things' technically (subordinated the text to his worldview, reinvented Odysseus as a traumatised veteran) but produced a film that felt like 'long periods of boredom and waiting punctuated by violence.' The diagnosis offered — that he overthought it when he should have felt it — is Hilary Mantel's formulation: 'put down the text, and dream it.' It's the right note to end on, and it's honest that even a well-executed unfaithful adaptation can still fail, for reasons that resist systematic analysis. Willder's book sounds genuinely useful — not a theory of adaptation so much as a guided tour of what goes wrong and what, rarely, goes exactly right. The essay format means the argument is compressed to its essentials: the quality of the source is irrelevant; unfaithfulness usually helps; the film-maker needs to find their own language; emotions and sensations are what you carry through the translation. None of this is new, but it's stated here with enough specific examples — Don't Look Now, Manhunter, Clueless, A Clockwork Orange — that it feels like earned knowledge rather than received wisdom. For anyone who has walked out of a cinema muttering about the wrong casting or the ruined ending, the book offers something better than vindication: a framework for understanding why your private version and the director's version were always going to diverge, and why that divergence is not a failure but an inevitability. The dream in your head was yours. The film is theirs. The argument is which one stays with you.
