“On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity.”
That rule can be used to justify a lot of content that doesn't belong here. Reading the discussion here is like reading a forum for political scientists discussing the tradeoffs between strong and weak typing.
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https://news.ycombinator.com/newsguidelines.html