Good Lord. :bang2:
Those conclusions are based on evidence and facts involving the case. Freeh and his company have stellar credentials and are experts with decades of experience. They get the facts and the evidence, then use their expertise and experience to draw conclusions.
It goes along with any other type of investigation that law enforcement does. While it would be great to get a clear confession or irrefutable proof in a case, often times solid evidence with conclusiions drawn from experts with years of experience and an excellent track record is more than enough to convict a person.
They never found the murder weapon for the Nicole Brown and Ron Goldman murders. They never had any actual witnesses to them being murdered. But, the evidence pointed to the conclusion that OJ murdered the two. Same with Rae Carruth.
Freeh's report is rock solid.
YR