Detail #256: Onwards with #255 – "Inverse Imperative" due to Social Rank

Consider, again, the imperative. In a highly hierarchical society, lower classes would very seldom give commands to higher classes. It would be economical to use the same markers though - so, for instance, 

direct imperative mood:
high → low: imperative
low → high: asking for permission to do something

reverse imperative mood:
high → low: granting permission to do something
low → high: imperative

One point I am trying to convey here, in part, is that asymmetrical inverse systems might be pretty cool.