I think the general thinking is that due to the limited number of hours per day, if you can keep [bad thing] away from your child within your own house, then th

I think the general thinking is that due to the limited number of hours per day, if you can keep [bad thing] away from your child within your own house, then they will struggle to ever acquire enough of [bad thing] to do harm considering the fact that they spend: 24 hours - 8 hours sleeping - 6 hours at school - [time spent in house] = negligible time left for malfeasance