LondonJohn
Penultimate Amazing
- Joined
- May 12, 2010
- Messages
- 21,162
I thought that most of the measurements of the footprint on the mat, like 30 of them matched up with Raff's foot, and there were big discrepancies b/t it and guede.
Hehehe. No. A certain pro-guilt commentator (who *ahem* claims to be a lawyer) did an Excel spreadsheet showing the measurements used by Rinaldi, and comparing them to Rinaldi's measurements of the Sollecito and Guede reference prints. He decided - as had Rinaldi - that the print matched Sollecito's with the now-fabled "millimetre-accuracy".
However...... closer examination reveals three rather important things: firstly, Rinaldi actually mismeasured a couple of key measurements on the bathmat print; secondly, it's very apparent that Rinaldi chose his measuring points on the reference prints very.... how shall we say... "carefully", so as to make it appear that one print (Sollecito's) "matched" the bathmat partial print, and the other (Guede's) did not; and thirdly, a crucial area of Rinaldi's "comparison" was the big toe, where Rinaldi quite clearly - and erroneously - counted a blood drip/spot on the mat adjoining the inside of the big toe as actually part of the big toe itself.
You can do it yourself if you actually pull up copies of all three prints and measure them yourself. I can't be bothered to do it for you again.
Here's the truth about the bathmat partial print: nothing scientifically can be said about this print for evidential purposes, other than that it has to have been made by a person with above-average male size feet (i.e. an above average male foot, or an extremely above-average female foot). Therefore, one can exclude the print having been made by - for example - Knox or Meredith. But one can include both Guede and Sollecito as potential sources of the print.
And here's the thing: it's IMPOSSIBLE to make a positive identification from the bathmat partial print, especially when comparing it with reference prints. It's clear to even an untrained eye that the bathmat print has an indistinct outline, and that - more importantly - it was deposited in saturated blood/water onto a thickly-tufted cotton-pile bathmat with a ridged pattern. It's also highly likely that the print was deposited in an uneven footfall (probably with most of the body weight distributed onto the ball of the foot). To compare this print with reference prints - made on a smooth, flat surface in very accurate print ink with an even standing footfall - is a ridiculous endeavour that has no scientific worth.
In short, it's impossible (and scientifically bankrupt) to even attempt to use the bathmat partial print for inclusive comparative analysis with reference prints. The most one can do is rule out all people who do not have above-average-male sized feet, and who do not have any very distinct abnormalities in their feet.
My personal opinion is that Rinaldi was given the bathmat print and a copy of the two reference prints, and told which one the police/prosecutor would like it to match (i.e. Sollecito's). I suspect therefore that Rinaldi compromised his scientific integrity by allowing confirmation bias to "fit" Sollecito's reference print to the bathmat print, when even the most cursory analysis shows how improper a match that was.
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