Looking at the results and the prompt, I would tweak the prompt to
* ignore comments that do not speculate on something that was unknown or had not achieved consensus as of the date of yyyy-mm-dd
* at the same time, exclude speculations for which there still isn’t a definitive answer or consensus today
* ignore comments that speculate on minor details or are stating a preference/opinion on a subjective matter
* it is ok to generate an empty list of users for a thread if there are no comments meeting the speculation requirements laid out above
* etc
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