Mark McDonald
Thoughts on ethics, self-improvement, and whatever else I'm interested in this week.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 66 | Founded | 2 years ago | Last Issue | 5 days ago |
| Active | |||||
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markmcdonaldthoughts.substack.comLatest Issues
Correlation has five suspects, and causation is only one
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“I’m just saying, everyone who confuses correlation with causation eventually ends up dead.”
-Probably not a statistician
When I was in third grade,...
How to be an effective germophobe
Germophobia is an intense fear of germs and contamination, and it can lead people to take precautions far beyond what’s actually necessary to stay healthy. That’s a real struggle, and it’s not what this post is about. There are plenty of pe...
You might already be a longtermist
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“In every deliberation, we must consider the impact on the seventh generation.”
-Haudenosaunee (Iroquois) tradition
The idea of seven generation sus...
20 more things you probably didn’t know, September 2026
- During the summer, some grizzly bears in the Rocky Mountains will eat up to 40,000 moths a day. The bears will climb high up a mountain and flip over rocks to find the moths hiding underneath, then eat the moths to prepare for hibernatio...
We already have a small country of geniuses in a datacenter
Last week, OpenAI announced that it had used a swarm of 10,000 AI agents to solve the Navier-Stokes millennium prize problem, considered to be one of the most consequential problems in mathematics. I remember learning about this problem in...
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Thoughts on ethics, self-improvement, and whatever else I'm interested in this week.
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