Evidence, Inference & Enquiry

Here is a group at UCL who are asking some very interesting questions of inference and evidence; http://128.40.111.250/evidence/index.asp For example; Is there a concept of evidence that applies universally?  Are there specific or generic techniques for manipulating evidence that can be applied across disciplinary boundaries? They also provide quite a bit of material on evidence in complex legal and/or forensic cases and use of Wigmore charts.