I’m not complaining, just acknowledging for the sake of preempting the attacks of comments about microbiome.

Almost any comment in a discussion about diet/nutrition is bound to get downvoted (at least on HN). People are probably bound to downvote anything about the microbiome for the same reasons. Yet we know the microbiome is responsible for turning (at least some) genes on/off, and otherwise our study of the microbiome is in its infancy.

I’d rather have someone reply about the jelly fish microbiome, if any, than explaination of HN social norms. The cool thing about HN is you might get some expert, in this case a marine biologist lurking, not the social norms.