To lose your right to freedom and face years of incarceration for something of which you are innocent because the courts have chosen to exclude sound expert evidence on memory is a travesty of British justice.
At which point another habitue of the alehouse leant over and pointed out (he being a computing expert) that the memory required would simply be vastly expensive.
He wouldn't allow the defense to argue that no one's memory is infallible and blocked testimony from an expert witness who had made extensive studies of memory--especially what happens when a person handles the multitudinous tasks Libby was tackling 14 hours a day, 7 days a week.