Enigmas are the unanswered questions of Ethnis, the part of it which we as the authors may have our own answers for, but which we would rather you develop your own answers and interpretations to.
To you readers, these questions may open up questions as to the higher nature of Ethnis. To you players and narrators it may open up new avenues for play. In some cases entire campaigns or major arcs can hinge on an enigma!
Yes Ademal. Yes. Such a sweet idea!