I have read with interest the continuing saga of the legalization of marijuana as it pertains to both medical and recreational status in various states of the nation.
In general, SC is more prohibitive than many of the other states. In addition, the federal question of legality supersedes the state laws and even in the presence of state legality it remains illegal at the federal level. It's status is Schedule I controlled substance.
This brings us to viability in the marketplace. There are a number of companies at which I was employed where requirements included drug testing at various intervals.
I used to submit to random drug testing. Now I submitted to an initial test for employment and subsequently may be tested "for cause".
There is a faulty notion among some of the people here that legal marijuana correlates directly to the workplace as well. This could not be farther from the truth.
Just because the state may legalize marijuana if a company forbids it's use then you remain subject to termination for failed drug tests.
The state cannot impose intervention on a company which finds the drug affects the performance of employees and if the company says it's contrary to policy with termination consequences you are better off not pushing your luck.
Knowing the half life is tantamount to the understanding of residual effects of any drug. Even in the presence of varying elimination mechanism efficiencies you're looking at a month or so for a chronic user becoming able to "pass" a drug test for cannabinoids as being common. Even then the fat storage and subsequent release of the drug will cause minute fluctuations.
It has been my profound sorrow to witness friends lose gainful employment because they declined to cease the consumption of marijuana. Some of these individuals lost coveted positions with tech firms rare to their area and excellent pay and benefit packages — all for a toke on demand.
As for me, that day I realized drug testing was in my future I put down the weed. I stopped the pills. I stopped smoking tobacco a number of years prior to that period BUT I was bound and determine that my highly addictive personality would not cost me my employment over some hard headed notion such as "I'm just going to smoke my pot" which was told to me by a person who did continue and now works a biker bar instead of a technology firm.
The moral to the story is your priorities set your station in life and what you do tomorrow depends largely upon what you do today.
Try not to be stupid regarding altered consciousness. I was initially but set it all aside before it became too late. The practicalities of earning a living and existing in a viable state require competence in those activities which constitute your life.
The stupor of a never ending half life hangover is not conducive to competence at work ... or anywhere else, either.