Weekly I/O

Weekly I/O

25 Things I Learned #12

Rumination #12: Philosophy & Mindset, Psychology & Product Design, Systems & Systems & Human Behavior, Game Design & Learning, Decision-making & Writing

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Cheng-Wei Hu
Feb 08, 2026
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If you’re new to Weekly I/O, I share five things I’ve learned each week.

The rumination series are one of the most popular posts in Weekly I/O. You can read the previous one here. You can also find the Chinese Translation here.

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Hi friends,

I found great value in revisiting past learnings regularly to reflect on and create new connections to my existing knowledge.

In this Rumination, I will pick learnings that I found worth reviewing from Weekly I/O#96 to #100, categorize them, and connect some with related inputs from everything I have learned in Weekly I/O.

Hope you enjoy it!

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