I think it's fairly straightfoward to say that something that the child has some problems with the language that result in her not yet having college level language skills. If your position would be that you know what those problems are and those problems have nothing to do with polysemy, I would grant you that points in the direction that polysemy isn't a huge deal. [...] When it comes to the case of or (/the German oder that works the same way) I know that I had classmates who struggled to wrap their heads around the fact that the mathematical or means something different than the phrase as it's commonly used. I think or is actually a big deal. A lot of other words aren't a big deal but there are a lot of words the effects add up. [...] I don't think that vagueness is the point of poetry. Having different prepositions allows a poet to create an effect by using a prepositions in a way that it isn't usually used to communicate a new meaning. Has as poetry goes I would add that the relationship system I proposed is quite yielding. If you take an English word like lover you don't automatically get a word to describe the equivalent of the sibling relationship. Playing around with the equivalent of graph theory terms like graph, branch and root could also be fun for poets. The poet get's those language tool for every relationship. In the same way that the word lover would be an extension of a relationship/graph term + the emotion of love, any other emotion could also be used. Huge spaces for poetry open up because there a solid foundation.