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Comments from the Conversation article also contain a link to download the paper from the author: https://www.dropbox.com/s/np0n4v72bdl37gr/sevensisters.pdf?d...

By adding an author profile and a list of other Singularity Hub articles by the author, they make it look like the author is part of the Singularity Hub community, but the two articles that he has written are both from The Conversation.

This is the correct link, but unfortunately The Conversation often features on HN only by proxy via reposts of its articles.

wow. they basically copy & pasted the conversation article... or the other way around?

The Conversation literally has a button you can click to help you copy & paste the article. And there's attribution at the end of the Singularity Hub repost. There's nothing shady going on here.