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HN is generally a site frequented by people with mostly software/hardware/<other-eng-backgrounds> with a slanted focus on all things software related (please forgive the generalizations here).

Are there any sites focused towards other professional disciplines (other than various subreddits) with a similar model of user-content submission with the level of discussion of HN?

e.g. Is there an HN for finance? Or HN for natural sciences? etc...