You need to allow yourself to hover. It is not a matter of trust etc just that some kids require more active supervision tban others. Those that have more passive children won't get that. I think what caused the concern was that you may be forgetting (like most of us do at times) that advanced intellect does not equate to advanced judgement due to lack of life exoerience. Really you can only keep him safe and yourself sane until he gets a bit older. Then you can deal with the next problem.