Changing your mind
With me, I didn't take an interest in this case until the verdict was in the news; and after some early confusion over what turned out to be disinformation, my initial instincts have just been confirmed at every turn. I remember feeling slight surprise at the verdict (because the case didn't sound right even then) - but thinking that the evidence against Knox would no doubt become clear. Of course, it didn't, and the longer I went on reading the blogs on the case, the more convinced I became that Amanda and Raffaele were completely innocent.
I came to this case even later: I only took notice of it because of the discussion here, and as you could tell from my early posts it took me a while to get up to speed.
However what tilted me towards thinking that Knox and Sollecito were probably innocent was the sheer inanity of the arguments I saw in the thread for their guilt. You don't necessarily need to know what the facts are to spot a flawed argument: If I said that all flibbets were gizzles, and Ted was a gizzle, therefore he was a flibbet, sufficiently cluey people will know at once I'm making a fallacious argument even without knowing what flibbets and gizzles are.
By the same token the arguments I was seeing for the guilt of Knox and Sollecito had holes you could drive a truck through, and were presented with certainty which was completely disproportionate to the evidence.
Of course as we nailed down more and more of the actual facts, as opposed to "facts" established in the mind of Massei or in carefully protected internet echo chambers, it turned out that the guilter case hinged on false factual claims
and bad arguments.
The Massei report was for me the final nail in the coffin, because once again the arguments were so laughably flawed that it was obvious the conviction was unsound. Massei repeatedly engages in tenuous speculation, announces a conclusion as
certain, and then moves on as if it really was certain. By doing so repeatedly he conjured "proof beyond reasonable doubt" out of a chain of suppositions every one of which should be doubted by any reasonable person.
At this stage it's only barely conceivable that new evidence could come along that made me think Raffaele and Knox were guilty. If they confessed and led police to a pile of their bloody clothes and murder weapons that would do it.
However I don't think it's even conceivable that I could be talked into thinking that the conviction was justified, having read the Massei report, because no amount of evidence will turn a fallacious argument into a sound one.