I've often had half-finished LW post ideas and crossed them off for a number of reasons, mostly they were too rough or undeveloped and I didn't feel expert enough. Other people might worry their post would be judged harshly, or feel overwhelmed, or worried about topicality, or they just want some community input before adding it.
So: this is a special sort of open thread. Please post your unfinished ideas and sketches for LW posts here as comments, if you would like constructive critique, assistance and checking from people with more expertise, etc. Just pile them in without worrying too much. Ideas can be as short as a single sentence or as long as a finished post. Both subject and presentation are on topic in replies. Bad ideas should be mined for whatever good can be found in them. Good ideas should be poked with challenges to make them stronger. No being nasty!
Aumann agreements are pure fiction; they have no real-world applications. The main problem isn't that no one is a pure Bayesian. There are 3 bigger problems:
This would probably have to wait until May.
"Pure fiction" and "no real world application" seem overly strong. Unless you are talking about individuals actually reaching complete agreement, in which case the point is surely true, but relatively trivial.
The interesting question (real world application) is surely how much more we should align our beliefs at the margin.
Also, whether there are any decent quality signals we can use to increase others' perceptions that we are Bayesian, which would then enable us to use each others' information more effectively.