Thank you Carana
A number of posters make the point that the forensics were "Inconclusive" as though this adds some weight to their argument about the forensic results.
It may be interesting to debate what members here think "Inconclusive" actually means.
To kick this off, here is Vocabulary.com definition
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If something's inconclusive, that means it doesn't lead to a conclusion or a resolution. Inconclusive often describes scientific results. If your data about a flu outbreak is inconclusive, then your results don't prove anything.
A good way to remember the meaning of inconclusive is to look at the root word conclusive, which means "definitive, decisive, and convincing." When you add in- — which means "not" — to the front of conclusive, you get a word that means "not definitive." When something's inconclusive, it doesn't resolve your questions and leaves room for debate. If you're a detective, the last thing you want to hear is that your evidence is inconclusive.
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http://www.vocabulary.com/dictionary/inconclusive
INTERPRETINGDNA TEST RESULTS
DNA testing generates three possible results: inclusive, exclusive, and inconclusive. An inclusive result occurs when the DNA profile of a donor is consistent with the DNA profile from the crime scene evidence;the individual is included as the possible source of that evidence. However, the strength of inclusion depends upon the number of loci (locations on the DNA strand) examined and how common or rare the resulting DNA profile is in the general population.
An exclusive result occurs when the DNA profile from a donor is inconsistent with the DNA profile generated from the crime scene evidence; the individual is excluded as the donor of the evidence. However, exclusion does not imply innocence. Other evidence collected at the crime scene may link the suspect to the crime.
Inconclusive results occur when the DNA testing does not include nor exclude an individual as the source of the DNA evidence. This can occur when the quality or quantity of the DNA evidence is not sufficient to produce interpretable results, or if the evidentiary sample contains a mixture of DNA from several individuals. In the case of inconclusive results, additional testing may be necessary or additional evidence may need to be collected and examined.http://www.lawtechgroup.com/samplechapters/ForensicStudies.pdf