Various news outlets reported that they found both, DNA co-mingled with Kercher's blood and blood co-mingled. I understand that media can get technical matters wrong, but it is the determination of the professionals in the courtroom as to the strength of the evidence, and these instances were treated as quite important. So, possibly we agree. PR firms hired by the Knoxes have put out the meme that there was no phsyical evidence, not that the defense found themselves in the unusual position of disagreeing that the evidence proved their client guilty. And while we speculate about the evidence based on the details that reach us, teams of highly trained forensic specialists, attorneys, and judges saw the evidence in detail and determined that it was sufficient to convict Knox. Trials are not infallible, but that is a big difference from the horror story many tell of a poor exchange student who was railroaded into a conviction improperly and without evidence. There is more than enough reason to believe Knox was involved in this murder.