tag:blogger.com,1999:blog-8597101.post2309911524567125231..comments2024-03-25T20:06:39.794-05:00Comments on Grits for Breakfast: Short shots on forensic errorGritsforbreakfasthttp://www.blogger.com/profile/10152152869466958902noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-8597101.post-25458242935313183792015-10-03T15:53:40.601-05:002015-10-03T15:53:40.601-05:00I also wouldn't expect a technician to be flue...I also wouldn't expect a technician to be fluent in the theory of validation, LOD, LOQ, etc. Technicians are just that - technicians who run wet procedures and instruments, and process data using standard protocols They don't design and optimize processes and procedures. For that sort of information you would want a higher level scientist, probably a Ph.D. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8597101.post-84915691791624751602015-10-03T15:38:15.139-05:002015-10-03T15:38:15.139-05:00Field tests for drugs are by their nature presumpt...Field tests for drugs are by their nature presumptive screening tests, with different false positive and false negative error rates than confirmatory laboratory tests. So, to talk about the field tests as "flawed" isn't correct. It would be fair to compare different field tests in their accuracy and specificity, and conclude that one was better than another. But the fact that a certain percentage of field tests are not confirmed in subsequent confirmatory lab tests is not particularly noteworthy. It is expected and predictable science. It is up to the legal system to determine if it wants to use that presumptive information, with its known limitations, for decision making purposes.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8597101.post-41831100227780551082015-09-30T11:39:00.864-05:002015-09-30T11:39:00.864-05:00Grits, Rapid DNA and 'black box' software ...Grits, Rapid DNA and 'black box' software could be jacked with like VW did and those igits got away with it for a very long time. I'm having a hard time believing that out of the thousands of shops performing the so-called - Inspection, not one single mofo (tech or owner or customer) noticed that a smoking VW Passed the friggin Inspection. <br /><br />In order for the scam to have worked for so long, VW had to have had a Bag-Man on call to intervene and grease a few greasy palms. Once the DPS gets the green light, all the prosecution has to do is blame false arrests and the convictions on software and poof humans hands are considered clean. The taxpayers become the Bag-Man on the back end and bribe the wronged to go away. With that, we need to know the names of everyone that participates in the creation, set up & maintenance of Black-Boxes. I hope you get the opportunity to ask him if he can assure the 'Public' of 100% transparency. For the sake of the PC & race-baiting crowd, let's just call them Computers to avoid any color wars. Cya.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8597101.post-64525845460267846842015-09-30T11:14:06.852-05:002015-09-30T11:14:06.852-05:00Hey Anny, you should really consider promoting you...Hey Anny, you should really consider promoting yourself as an expert to the 3% +/- of real CDLs that actually take criminal cases all the way to trial (all the way). You could make bank poking holes in bullshit testimony. Think about it. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8597101.post-86324748570474509822015-09-29T10:24:14.487-05:002015-09-29T10:24:14.487-05:00For the layman and Defense Attorneys...
"Fore...For the layman and Defense Attorneys...<br />"Forensics, Lawyers, and Method Validation — Surprising Knowledge Gaps"<br />By Dr. Kevin Schug, UT Arlington<br /><br />http://images2.advanstar.com/PixelMags/lctc/pdf/2015-07-24-uk.pdf<br /><br />The article is mostly about GC-MS (toxicology), but it applies to EVERY SINGLE TEST IN THE CRIME LAB! DNA analysis too (especially)!<br /><br />If you want to freak out the Expert for the Prosecution during testimony, start asking about method validation, accuracy, precision, LOD, LOQ, etc. Most lab technicians don't know the definition differences between these words.Anonymousnoreply@blogger.com