You're kidding. You are not applying the same reasoning. The tissues and the luminol are not a finding with the same features: you can explain the bloody tissues. There could be a dozen reasons why a passer by throws bloody tissues down the road. So there is in fact a dozen reasons for why they can be considered random.
But there is not even one plausible explanation for the luminol footprints as something random (no plausible substance, no plausible dynamic).
And even if the tissues were connected to the murder (they could be theoretically, since there could be blood from an unknown in the downstairs apartment) they would be irrelevant as probative elements, because the information they carry is zero. You can't match them to a suspect and they do not "contain" information except that someone was bleeding. They carry little information beyond the biological identity of the person who left them.
But the luminol prints carry a far greater amount of information: they are directly linked to the suspects (their feet, their room), they are located in the murder house, so they have an extreme, and exclusive proximity to the murder scene (and are even close to other bloody footprints), and they have such an unusual distribution so they carry a load of information about the dynamic by which they were produced (bathmat shuffle - no "normal" walk, barefoot, no "common" substance).
Moreover they are absolutely uncommon as a finding itself, since they don't form a trail of prints and belong to two different individuals; and the analogy between them and the bathmat print can't go unnoticed.
And - you will say by coincidence - they perfectly fit in a scenario where "stagers" (the offenders) come back to the murder scene, employ bloody towels to move and walk/shuffle in the murder room (where they leave traces of dragging but no bloody footprint) and then they wash themselves in the bathroom. They are unable to wash the carpet (thus there is only one footprint left).
Look how the unusual, unexplained luminol footprints can be easilly connected both to the towels (other unusual element) and to the bloody bathmat print.
Your 'logical method' apparently consists in deleting all these apparent logical links. You fail to "test" a bathmat shuffle / staging scenario ti see if it fits the luminol prints. You overlook the "coincidence" that they produce.
While on the other hand you consider the fact that you "can't explain them" as unimportant; you falsely compare them to things which instead you can easilly explain through plausible and simple events, and which don't carry any particular information.
This is what I meant by your faulty reasoning and faulty assumptions above.
There is NO suspicious reason why Amanda Knox's footprints would be found in that hall, even with luminol. Luminol is NOT a test for blood, that information requires a second test which was never done - by this, your "crack" group of investigators.
You assume that the hallway outside of Meredith's and Amanda's rooms was in a forensicly sterile condition at 8:30 pm, Nov 1st, so that everything found there had to have been put there at the murder time.
It is telling that Judge Massei employs both this reasoning and its opposite in his motivations report, in one of the more stupid examples from Massei.
In defending Stefanoni's neglecting to test the presumed semen stain, located under the victim's hips, on a pillow placed there during a sexual assault (!!), Judge Massei defends the non-testing of the stain thusly:
Massei page 9 said:
At the hearing of December 4 the Defence for Sollecito concluded the rebuttals, submitting a memorandum evidencing that on the site of the inspection of May 25, 2009, on the pillowcase of the pillow found in the victim’s room some stains had been found with the ‚crimescope‛ that could have been spermatic in nature and that these had not been the object of any genetic analysis. In relation to this contention, various questions were raised as to the necessity of testing relative to these stains.
Massei page 231 said:
(Stefanoni) stated that the pillow was found half under the pelvis of the body. Analysis was not done on the pillow because it was considered more useful to use it for print analysis, whether of shoeprints or handprints.
What? Analysis was not done by the "crack" Scientific Police because it was an either/or in relation to print analysis?
But wait for it.... Massei joins the ranks of the galactically stupid by defending the decision NOT to test the presumed semen stain.... why? Because it cannot be time-stamped... which is the reasoning that SHOULD be applied to the luminol out in the hall..... but wait for it, because this reasoning is a doozy...
(emphasis added and not in original text)
Massei page 382 said:
In this regard, what has been previously observed on the subject is called to mind; with specific reference to the stains found on the pillowcase, particular mention of which was made by Sollecito’s defence *team+ during the trial and in the related illustrative memorandum, the following should be noted: even if a genetic investigation established the spermatic nature of these stains, such an investigation, as a rule, would not allow these stains to be dated and, in particular, it would not be possible to establish that they had been deposited on the night on which Meredith was killed. It having furthermore been established that Meredith had an active sexual life and at times had intercourse in her own room (cf. on this point the statements of her boyfriend Giacomo Silenzi) such an investigation, besides not being of a strictly necessary nature due to the impossibility of dating [i.e. establishing the date] (cf. what was elucidated on this aspect by the genetic experts), might also yield an entirely irrelevant outcome even for establishing the spermaticnature of those very stains and seems to be, therefore, a purely explorative activity, [which] is not permitted at this stage of the proceedings because it is lacking in the requirement for absolute necessity which was, on the contrary, requested.
"(I)t would not be possible to establish that they had been deposited on the night on which Meredith was killed."
"(I)t would not be possible to establish that they had been deposited on the night on which Meredith was killed."
"(I)t would not be possible to establish that they had been deposited on the night on which Meredith was killed."
"(I)t would not be possible to establish that they had been deposited on the night on which Meredith was killed."
Did we read that right? If it was discovered to have been Rudy's.... that is game over for Rudy. If it is discovered to have been Raffaele's (with no evidence other than the bra-clasp that even Stefanoni at testimony did not deny touching with a dirty glove!) that would be game over for Raffaele.
If it had been Amanda's...... oh never mind.
But the point is.... Massei does NOT assume a forensically sterile scene when it comes to the flippin' presumed semen under the victims hips at a sexual assault!.....
But all of a sudden assumes that ANYTHING found belonging to Amanda in the very hallway she strode for a couple of weeks is suspicious...
And Machiavelli says there is no other explanation for luminol detecting Amanda in that hallway except for a suspicious reason.
Friends.... this is Massei, this is Machiavelli... this is Stefanoni and the case against Amanda and Raffaele.
Who are you going to believe: Mignini, or your lying eyes?