With all latest news on Mr Barry George and the speck of powder which convicted him - it got me thinking that in some areas DNA is not that watertight. My example being: If a person was to obtain my comb/hairbrush and toothbrush by whatever means. And with the hairbrush - brush it around the inside of a balacalva. With the toothbrush - brush it around the top of a pen. Then place the balacava and pen at or near the scene of a crime with the expectation that they would be discovered by the Police. Does this not place me in a difficult position if I havnt got a rock solid alibi? Im no expert in this but it would be a lot easier to place an item that can hold DNA at a crimescene than it would be for anyone to place a fingerprint. Can any budding SIB Sherlock Holmes type bods care to query this.