[dmatthewson]

Here is "False Positives Equal False Justice" which analyzes the particular drug field tests used, showing they have an enormous false positive rate.

http://www.cacj.org/documents/sf_crime_lab/studies__misc_mat...

The judge's ruling ( https://ecf.ksd.uscourts.gov/cgi-bin/show_public_doc?2013cv2... ) hinges on his statement on page 13 that "a reasonably trustworthy field test that returns a positive result for the presence of drugs is a sufficient basis, in and of itself, for probable cause."

Given the established accuracy of the field test used, no sane and honest person would ever claim it is "reasonably trustworthy", making the judge's claims moot.