It has been my beleif for a long time now that a poem must be a complete system of thought - much like how a sentance is a complete thought. However, the idea of the appropriate form for the subject and style of language is something that I cannot resolve. In an analytical sense (or otherwise, if you prefer), how do you determine the meter, rythem, the use of symbolism, or generally the form in whole of a poem? do you think, for example, that there are appropiate forms and/or devices for a particular subject or style? How would you define "open" or "closed" forms?