My point is that it can still be a false positive, even though &quot;detecting weed&quot; and &quot;using weed&quot; both occurred.<p>The dog &quot;alerted&quot; for drugs, but the dog can&#x27;t testify as to why -- because it actually smelled drugs or because it sensed its handler wanted it to.<p><a href="http:&#x2F;&#x2F;www.reviewjournal.com&#x2F;news&#x2F;crime-courts&#x2F;legal-challenge-questions-reliability-police-dogs" rel="nofollow">http:&#x2F;&#x2F;www.reviewjournal.com&#x2F;news&#x2F;crime-courts&#x2F;legal-challen...</a>