Exactly. The only downside I imagine is that it could give false-positives to retarded people. Reaction speed is pretty well correlated with intelligence.
I suppose the system could compare your current score with your baseline / sober scores. Or, mentally slow people would simply have less tolerance for being fucked up at work.
I suppose the system could compare your current score with your baseline / sober scores. Or, mentally slow people would simply have less tolerance for being fucked up at work.