The HackerNoon Newsletter: The Proof of Usefulness Algorithm: Is It Good? Do People Use It? (4/18/2026)
How are you, hacker?
🪐 What’s happening in tech today, April 18, 2026?
The
HackerNoon Newsletter
brings the HackerNoon
homepage
straight to your inbox.
On this day,
Osborne Computer introduced in 1983,
and we present you with these top quality stories.
From
What Ghost Murmur Technology Actually Is (Its Not a Heartbeat Detector)
to
The Proof of Usefulness Algorithm: Is It Good? Do People Use It?,
let’s dive right in.
What Ghost Murmur Technology Actually Is (Its Not a Heartbeat Detector)
By @misclassify [ 9 Min read ] The CIA says Ghost Murmur detected a heartbeat from 40 miles away. Physicists say the math is off by 2 quintillion. Heres what the tech actually does — and why Read More.
The Proof of Usefulness Algorithm: Is It Good? Do People Use It?
By @proofofusefulness [ 3 Min read ] A technical approach to answering two simple questions: Is it good? Do people use it?
🧑💻 What happened in your world this week?
It’s been said that
writing can help consolidate technical knowledge,
establish credibility,
and contribute to emerging community standards.
Feeling stuck? We got you covered ⬇️⬇️⬇️
ANSWER THESE GREATEST INTERVIEW QUESTIONS OF ALL TIME
We hope you enjoy this worth of free reading material. Feel free to forward this email to a nerdy friend who’ll love you for it.See you on Planet Internet! With love,
The HackerNoon Team ✌️
