archieil, No, quite the opposite. In a country like the USA many fibers are generic being industrially produced, e.g. rayon, nylon, etc. The shirt JR wore to the White's party had been manufactured in Israel from local wool so its forensic signature is distinct from woolen items available for purchase in the USA. So although not unique just different enough not to be found lying about in laundry rooms ! If the fiber evidence is credible and could be produced in court then it would place JR at the scene of either JonBenet's death or subsequent staging. The only other explanation is third party transfer. .