'broken chain' theory of the case, favoured by Broad, arguing that there is no causal link between Edith's letters and the actual murder, because of the length of time separating them and the manner of the murder, is developed by the UCL professor of jurisprudence William Twining. In Rethinking Evidence: Exploratory Essays (2006), pp. 344–396, Twining argues that a Wigmorean, 'decompositional' analysis of the charges brought against Edith Thompson demonstrates how unsatisfactory the verdict against her was in law. Twining writes that 'For the prosecution to convict Edith, they had to prove that the attack was premeditated. Even if one totally discounts Freddy's evidence about the events of the evening (and his story of the period up to 11 p.m. was generally consistent and was largely corroborated by the Graydons), there is almost nothing to support the proposition that the attack was premeditated. There was no evidence to support the proposition that the knife was purchased recently in order to attack Percy; there was no evidence in support of the proposition that Bywaters put the knife in his pocket that morning because he planned to attack Percy — the best that the prosecution could do was point out that there was no corroboration for his claim that he was in the habit of carrying it.' The ‘tea-room’ passage (exhibit 60) - “Don’t forget what we talked in the Tea Room, I’ll still risk and try if you will — we only have 3 years left darlingest. Try and help.” - was interpreted by the judge as referring to either poisoning Percy Thompson or to using a dagger. This was also the prosecution theory, that ‘what’ referred to killing Percy; the defence claimed that ‘what’ referred to Freddy trying to find Edith a post abroad so that they could elope. Twining argues that a close Wigmorean analysis allows for the following conclusions: 'For example, the judge's suggestion can be attacked on the following grounds: 1. it is sheer speculation, with no evidence to support it; 2. it involves a petitio principii in that it assumes what is seeks to prove; 3. it does not make sense of the passage: ‘Don’t forget what we talked in the Tea Room [about whether to use poison or a dagger], I’ll still risk and try if you will we have only 3 years left darlingest.’ Twining continues with 'Even if we totally discount testimony of