I would leave the issue on reliability of testing to scientists, but with respect to the exoneration, clearly exonerating people early in investigation is good for them, it's good for the system. There are examples coming up in the U.K. where people have been convicted on the basis of confessions and then exonerated as a consequence of the DNA testing. So it's very easy to imagine that, and certainly we've had our share of wrongful convictions in this country that, had DNA been present at the front end, the system would have been saved from all that distress, as well as the individuals involved.
