Kelsey Piper

Kelsey Piper

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Journalist (Vox Future Perfect) writing on philanthropy, effective altruism, and impact‑oriented policy and tech.

Gentle Empathy Defies Parents'
SocialApr 21, 2026

Gentle Empathy Defies Parents'

This story describes the worst nightmare of any parent and is, if anything, far too kind to the people who deliberately put everyone around them at risk of it. Probably the gentle, blame-free approach is the more effective one but...

By Kelsey Piper
AI Misidentifies Unseen Author, Offers Flattering Guesses
SocialApr 17, 2026

AI Misidentifies Unseen Author, Offers Flattering Guesses

I have a bunch of secret AI benchmarks I only reveal when they fall, and today one did. I give the AI 1000 words written by me and never published, and ask them who the author is. They generally give...

By Kelsey Piper
Even Critics Admit Upzoned City Enables Affordable Homeownership
SocialApr 10, 2026

Even Critics Admit Upzoned City Enables Affordable Homeownership

This is, somehow, meant to be an anti-Sherrill argument, but even when trying to pretend affordability would be bad they make the upzoned city look unfathomably cool. We could have this. You could afford to own a home and start...

By Kelsey Piper
Waymo Crashes Far Less and Causes Fewer Serious Injuries
SocialApr 10, 2026

Waymo Crashes Far Less and Causes Fewer Serious Injuries

The opening here is very confusing. Waymos do not crash as often per mile as cars driven by humans, and are 92% less likely, when they do crash, for this to result in a serious injury. That's the whole argument....

By Kelsey Piper
Private Firm Hoards Zero‑day Arsenal; Govt Barred From Anthropic
SocialApr 7, 2026

Private Firm Hoards Zero‑day Arsenal; Govt Barred From Anthropic

An underrated feature of this situation: a private company now has incredibly powerful zero-day exploits of almost every software project you've heard of. And Hegseth and Emil Michael have ordered the government not to in any capacity work with Anthropic.

By Kelsey Piper
Kelsey Piper | Pulse