Let me start by saying this is joint work with Giampaolo Bella, and that what we have actually written, and that you can find in the proceedings, is not just a position paper, but actually a pro-position paper, where we are using the word pro-position not with the meaning of a true statement or false statement, but rather as something that we state for discussion and/or illustration. That is, I won't give you answers, rather I will ask a few questions and propose what is perhaps a slightly different state of mind than the one that we are used to. Let me also say there are many connections to the talks that we've heard today and also yesterday, and I will try to make references as much as I can.
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