Another heuristic: have an articulate friend you can argue with. When I had such a friend we would go to dinner and hammer each other for hours, even about things we agreed on. (One night the guy cooking across from us said he'd had the best seat in the house.) There's no better way to surface your assumptions and stress-test your reasoning. And it's fun! (But mutual respect and good humor are hard prerequisites)
To a first approximation, I offer for consideration the following adjusted candidates for suggmmandmentsTM 2 and it's complement:
#2: Thou shalt, to a first approximation, count and express thine enumerated approximations.
Secondly approximated, yet ne'er afore, quoth an percentage of approximation pursuant unto contextual attendance.
Thirdly approximated, presume unsighted presumption, inquire forthwith, cite necessity of form and enticements, demark incented permissions, reduce to reveal presump…