Lydialyle Gibson in Harvard Magazine:
In the weeks and months after Donald Trump’s second inauguration, the number “3.5 percent” kept showing up—like a mantra, or maybe a prayer—in different corners of the internet. It was repeated in social media posts, long Reddit threads, online newsletters, political podcasts, videos, and the websites of activist organizations. “The Hopeful Math for Saving Democracy,” proclaimed a headline in Ms. Magazine. In his newsletter, independent journalist Dan Froomkin asked, “Is there a magic number for the resistance?”—and answered with that familiar figure.
A decade ago, academic research found that authoritarian governments around the world have almost always been forced to yield when mass-resistance campaigns manage to mobilize 3.5 percent of a country’s population during a “peak” event. In the activist community, one organizer told me, it’s become “kind of a golden rule.”
More here.
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When Katie Thurston was diagnosed with Stage IV metastatic breast cancer earlier this year, at age 34, people kept telling her they knew someone with the same diagnosis. Solidarity, you might think. A helpful way to relate. Not exactly: Their friend or family member had died. This scenario is “pretty recurring,” says Thurston, who starred on season 17 of The Bachelorette, and while people have good intentions—they want you to know they have experience with what you’re going through—the remark doesn’t land well. “We understand that death is a possibility in this diagnosis,” she says. “I don’t need to hear that.”
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My colleague Joseph Lowndes and I have been 
Put a bagel in a toaster oven and push a button. In a few seconds, heating elements inside the oven glow red and heat the bagel. The action seems simple — after all, ten-year-olds routinely toast bagels without adult supervision. Matters look different if you inquire into what must happen to make the oven work. Pushing the button engages the mechanism of an incomprehensibly vast multinational network: the North American electrical grid.
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I begin this chapter with three outrageous facts:
Here’s an old paradox. The scientist declares that science is the only way to truth and that philosophy is bunk. “Over here in my department,” he proclaims, “we really learn things about reality. We poke and prod the universe and see what happens. We formulate hypotheses, design and conduct experiments to test them, analyze the data, and form justified conclusions about the way the world works on that basis. Over in the philosophy department, they don’t do any of that. They make shit up. What I’m doing is REAL and IMPORTANT and GENERATES KNOWLEDGE. Philosophers do none of those things!” And the philosopher, hearing this rant, has a ready reply: “What experiments did you do to establish the truth of that little speech? None at all! (And if you did run an experiment, I’d love to hear about the setup!) Turns out that you’re endorsing a bunch of philosophical claims. So you yourself have a philosophy all your own! Philosophy is inescapable for both of us. The only difference is that I’m honest about it.”
Put a bagel in a toaster oven and push a button. In a few seconds, heating elements inside the oven glow red and heat the bagel. The action seems simple — after all, ten-year-olds routinely toast bagels without adult supervision. Matters look different if you inquire into what must happen to make the oven work. Pushing the button engages the mechanism of an incomprehensibly vast multinational network: the North American electrical grid.