In education, students typically need an explanation for actions.
For grammar, they want to know why you use a punctuation mark or why you don’t capitalize certain words.
For science, they want to know why certain chemicals are safe to combine or why creatures belong to different classifications.
For history, they want to know why events affected war outcomes or why battles were necessary to resolve issues.
For mathematics, they want to know why you add this time, but divide the next time.
In a relationship, the individuals typically need an explanation for actions.
For a display of interest, the other party wants to know why the interest is there.
For a promise of commitment, each party wants to know why he/she has been chosen above others.
For a betrayal of trust, the hurt party wants to know why the infidelity was desired.
For a choice of the future of the relationship, each party wants to know why the agreed upon path was chosen.
In a dynamic, the sub learns many lessons as a result of an action with no explicit explanation.
For a period of silence, the sub is forced to learn to trust the Dom not to abandon her.
For a physical punishment, the sub is exposed to the physical pain and humiliation that her Dom experiences from her disobedience.
For a scene of sexual gratification for her Dom, the sub is reminded of her place to service her man first and foremost.
For the honor of wearing his collar, the sub acknowledges it is a reward of obedience and proper respect for her Dom.
While an explanation may be required in virtually all areas of the vanilla world, it is the absence of explanation that seems to provide the greatest lessons for subs to serve their Doms to the best of their ability.