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1.
OODA Loop (wikipedia.org)
155 points by yehudabrick on Feb 21, 2023 | 63 comments
2.
Ask HN: Concepts that clicked only years after you first encountered them?
579 points by luuuzeta on Jan 1, 2023 | 913 comments
3.
Show HN: Maildown – Markdown email campaigns
92 points by chris140957 on April 6, 2019 | 53 comments

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