How true dat.
Nephew of mine applied to Caterpillar technician training school/program. I went with him to the orientation session of the prospective candidates. I think CAT was gonna take in 12 students; over 30 were there.
Being a worldly man and having a ton of years in the construction biz, I scanned the room full of the hopeful lads watching their mannerisms and speech and then mentally filed away my assessment.
After orientation, my nephew was concerned about his competition which I quickly laid to rest. I told him that he can speak clearly, has excellent HS grades and is clean. In that I meant that half of those candidates are gonna bust out on a drug test. Easily half.
The nephew was chosen out of the group. I heard CAT was not able to fill the 12 head count they wanted to take in. Read into that what you will.
My wife worked in a cotton mill where a drug test was required. 90% flunked the drug test even though they knew when they would be taking it.