An open book: how to make a great film adaptation, from The Shining to Trainspotting
Not every great novel makes a great movie, and sometimes the opposite is true. But regardless of the source text, or how beloved characters are treated, there is more than one way to write a successful adaptation.

TL;DR
- Faithfulness to the source material is not the primary determinant of a successful film adaptation.
- Successful adaptations often involve taking significant liberties with the original text, translating its essence into a new visual language.
- The quality of the source novel (whether good or bad) does not dictate the quality of the film adaptation.
- Being overly reverential to the source material can be detrimental to a film adaptation; creative reinvention is often beneficial.
- Adaptations can be successful even when they significantly deviate from the original story, focusing on core concepts or 'what if' scenarios.
- Casting choices can drastically impact an adaptation, with actors sometimes making roles their own despite not fitting the initial description.
- Ultimately, adaptation is an act of translation, requiring filmmakers to find their own cinematic language to convey the story's emotional and sensory impact.