Mark McDonald
Thoughts on ethics, self-improvement, and whatever else I'm interested in this week.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 59 | Founded | 2 years ago | Last Issue | 14 days ago |
| Active | |||||
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markmcdonaldthoughts.substack.comLatest Issues
The scary, scary singularity
You know how in math you’re not supposed to divide by zero? That’s because dividing by zero produces a singularity, a point where an expression either shoots off towards infinity or just stops making sense. Astrophysicists use the same word...
Move slow and don’t break things
“For every complex problem there is an answer that is clear, simple, and wrong.”
Unintended consequences suck. Yet they happen whether we like it or not.
- In 1935, cane toads were introduced to Australia to control a beetle that was ea...
Unplugging the hedonic treadmill
Psychologists have noticed that people quickly adapt to improvements in their life and soon start taking them for granted, which is sometimes called the hedonic treadmill. The word “hedonic” comes from Greek and refers to happiness, and the...
Yes, no, and the secret third option
How do you respond to a loaded question? A classic example is the question “have you stopped beating your wife?” If you answer yes, then it implies that you have a wife and that you used to beat her. If you answer no, then it implies that y...
21 more things you probably didn’t know (July 2026)
- The CIA dropped billions of poppy seeds from planes to sabotage Afghanistan’s opium as part of the War on Terror between 2004 and 2015. The seeds were designed to sprout early and grow flowers that looked more appealing to farmers, but a...
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Thoughts on ethics, self-improvement, and whatever else I'm interested in this week.
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