@BruceJia I'm a big fan of "what if I'm wrong?"
Whenever possible, avoid lock-in to services, decisions, etc.
Corollary: Prefer the simple over the complex. (If you write in plain text over PDFs, etc.)
Corollary: Your beliefs are contingent on your history. (Useful as an empathy exercise.)
There's some obvious break downs to all three of these, but as far as life heuristics go these have been good ones for me.
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