[laughter] rachel jacob has a question about the death penalty. >> sort of related.audible] >> heather, do you have a point of view on the dna benefit? >> this is holding dna of everybody who has been stopped by the police, or where does it draw the line? [inaudible] >> including marijuana arrests. >> someone who's been convicted of a crime? >> so holding it in databanks for future law? >> criminal investigations. >> yeah, that is again, all of these are balancing cases, but i think that the benefits to possibly being able to solve crime, either retroactively or in the future, outweigh the risks to personal privacy. i think if somebody has already been convicted of a crime, their interest in the privacy that dna has to be outweighed by the fact that there is likely to have other, or there's a possibility involvement in other crimes as well. so i think law enforcement is right there, that this is an extraordinarily powerful tool. that can help save lives. and dna is getting to be a more and more accurate science but if you say dna can't exonerate people, so i don't th