📝 Add insight on monotony vs novelty and time perception

Openness.md

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 - Criticizing your in-group takes courage but is possible.
 - Experience things again (books, movies, ...). They might be the same, but you change and are a different person now. The world changes, too. No one steps in the same river twice.
 - Look for new experiences. It is the most important factor for [memorable experiences](https://travelopment.com/how-to-create-memorable-experiences/). When all days follow the same routine, [there is no way to differentiate the memories](https://www.youtube.com/watch?v=zHL9GP_B30E).
+  - Monotony collapses time. Novelty unfolds it. You can exercise daily and eat healthily and live a long life, while experiencing a short one... Creating new memories stretches out psychological time, and lengthens our perception of our lives.
   - Keep high experimental velocity. Try more things quickly!
 - [When you learn an interesting idea, or read an article, it takes 0 effort to think through friends who might enjoy it, and pass it on](https://www.neelnanda.io/blog/mini-blog-post-10-seek-positive-externalities). This applies all the more so to bigger things - jobs worth applying to, other people they should talk to, etc. Receiving opportunities has (essentially) 0 downsides on their end.
 - Do stuff in public. Think in public. Write in public. Ship in public. [Doing things publicly attracts like-minded people and opportunities that you wouldn't be able to easily otherwise find](https://www.lesswrong.com/posts/dEAmXSyXnpFFc9wgd/21-on-21).