Ah, the PGP mind. There is an obvious semen stain near the body of a raped and murdered woman. The fact that it wasn't tested is the defense's fault.
Situation normal in PGP land.
No, it's slightly different.
In "my land", I don't care
whose fault it was. Btw, in "my land" procedure decisions/events are
never the consequence of the choices of
one party alone.
In "my land", it basically
makes no difference whose "fault" it was of any procedure events, as for the decision about the accused's innocence or guilt, and in "my land" the process outcome does not consist in an assessment about possible "faults" in procedure by the parties.
An unexplained action by the prosecution that could have absolutely proved their case against Sollecito, could have proved the prosecutor's contention that there were multiple murderers or just provided more evidence to the case that Guede brutally raped and murdered Kercher by himself and it doesn't cause even a moment for reflection on how ridiculous this is.
There are multiple false assumptions in your statement above. Among them, there is the fact that you don't seem to consider the trial from the view point of someone (like a prosecutor or a judge) who sees the evidence as already
sufficient for a finding of guilt beyond reasoable doubt.
In normal people land, it is pretty clear that either somebody tested that stain and the results weren't reported or Mignini chose not to test that stain because he knew Sollecito was innocent.
In "my land", such "logical" passage is completely idiotic.
And in "my land" (but also on a few forensic-themed sites), DNA testing of semen stains requires the cutting of the fabric, therefore the destruction of the item.
Either way Mignini chose not to release evidence about the semen stain because it didn't support the sick fantasy that he was pushing.
In "my land", it was Manuela Comodi who was dealing with the piece of evidence.
And in "my land", the finding of semen belonging to anyone may have well actually supported any possible theory against Amanda Knox.