c.f.  Rule 1,  Rule 5.  Part k,  Rule 7.  Part d, Rule 14.  Part a.  Section vii.

*This rule is not part of the standard Model Family Rules. It is in the extended set of Oddly Specific But Necessary rules that we or our friends needed to make. What oddly specific rules have you had to make?

No asking questions about quantum physics after you have brushed your teeth before going to bed.