It's like a scene from one of those hard-bitten American crime movies of the 1930s. The police and a key prosecution witness are discussing problems with their evidence in a fast-approaching trial.
It turns out that the facts in the case have changed, rather awkwardly. It is a glum scene. And the cops say to the witness: ‘Yeah, we can’t change the data.’ And then they say: ‘But we can change the interpretation of it.’
