:::Ray there is no difference with scratches on CD's/DVD's and scratches on Blueray discs.  Shallow CD/DVD scratches can repaired.  Deep CD/DVD scratches can not be repaired.  How is that any different to scratches on blueray discs?  Are you claiming that any scratch at all ruins a blueray disc?  That is clearly not the case.  Unless you can show an actual study that has some evidence that blueray discs are ruined by scratches at a significantly higher rate then CD's and DVD's I will continue to remove this section from the article.  CD's are much easier to ruin with unrepairable scratches.  Scratching the label side of a CD can leave the disc unusable with no hope of repair.  That is much easier to do then scratching a blueray disc.