Professor Peter Tillers posted a very interesting discussion on the appeal of the conviction for the murder of Jill Dando, a well-known BBC TV reporter. One of the pieces of circumstantial evidence at the trial was a single particle of firearm discharge residue found in the coat of the defendant. At the appeal, a forensic report was presented that asserted that the particle should have been given no probative weight.

The following is an ADEPT Inference Path™ argument map that presents a portion of the appellant’s argument. Notice that the supporting condition is necessary for the soundness of the inference path.