Comment by jackric

I agree Safety is the top priority. Don't risk people with drugs traces in their blood; it may degrade their competence. Also don't risk a guy that didn't sleep last night working - his competence will be degraded.

I proposed my catch-all solution for this in another comment: https://news.ycombinator.com/item?id=26183297

My ideal is we just ensure competence - guy who smoked weed last night may be more competent than a clean guy getting divorced. Test the competence