TITLE: Relation between dendroidal and opetopic sets
QUESTION [6 upvotes]: To my shame I have to admit that I have as yet not looked much into opetopes and opetopic sets.
I am in the process of writing nLab entries on dendroidal sets and noticed that some remarks on the relation to opetopic sets should probably be in order. 
Now, I  know that I should just sit down and read the opetopic literature. But while I am busy doing that, and since the model structure on dendroidal sets wasn't around when most of it was written: does anyone know more about the relation?

REPLY [4 votes]: Urs, do you have a reason to think that there'll be much to say about this?  I can see that opetopic and dendroidal sets are both presheaf categories that arise in higher-dimensional category theory.  I can see that in both cases, the small category on which you're taking presheaves has a graphical or geometric interpretation, and there are some "face maps", and there's something tree-like going on.  But beyond that, I don't see what there is to say.  Do you have something in mind?
I just looked in Ittay Weiss's thesis, Dendroidal Sets.  "Opetope" is not in the index, nor is the relevant Baez--Dolan paper (Higher Dimensional Algebra III) cited.  So I guess he had no thoughts on the matter.