Hacker News
Left-recursive versus right-recursive lists in LR parsers
Article URL: https://cambium.inria.fr/blog/lr-lists/
Comments URL: https://news.ycombinator.com/item?id=43602961
Points: 1
# Comments: 0
Show HN: Sayso – We Fixed AI Phone Calls
Hi HN,
YC w24 company here. We just pivoted from drone delivery and on-demand GPU rental back to our original idea - using AI for language learning.
The Sayso app uses interactive Stories, really good AI Phone Calls and immersive community posts to create a fantastic Spanish learning experience.
Sayso lets you “shop around” for the lesson/story you want to do. Each story contains - well - a fun story that lets you see Spanish used in real world contexts, has you say a few useful sentences out loud so you practice pronunciation and ends with a short phone call that puts you on the spot. At the end, new words are added to an FSRS5-powered flashcard stack (most efficient memorization algorithm). I can tell you, it’s a lot of fun, words just stick and you gain a lot of knowledge quickly.
Stories and phone calls are made to be fun and useful. E.g., instead of “how to order a coffee”, we do something like “a waiter spills coffee on you” - you can choose to be nice or yell at him. This way, phrases just stick really well.
There are also community posts, which are short videos in or about Spanish with a short exercise that lets you say a sentence out loud in the end. And there are phone call scenarios that are a bit longer.
As additional motivation, there are Amazon gift vouchers for the leaderboard toppers every week!
How did we get here? We were part of YC w24. We applied to YC with AI language learning initially but decided to work on drone delivery during YC given our ML & engineering backgrounds. Turns out, no one needs that and the unit economics simply don’t work out. Then we launched gpudeploy.com and got #1 on HN [https://news.ycombinator.com/item?id=40260259]! But this didn't work out either - we turned into glorified car (Nvidia GPU) salesmen which we were not good at. So we went back to our original idea, language learning. We launched an initial app last year and now took the learnings and recently launched SAYSO.
It is available on iOS only for now.
Enjoy and have a nice rest of the weekend!
Comments URL: https://news.ycombinator.com/item?id=43602956
Points: 2
# Comments: 0
Call for expansion of Royal Navy surveillance after Kremlin spy devices found
Tsavo Man-Eaters
Article URL: https://en.wikipedia.org/wiki/Tsavo_Man-Eaters
Comments URL: https://news.ycombinator.com/item?id=43602930
Points: 1
# Comments: 0
Reconstructing the Knuth-Morris-Pratt Algorithm
Article URL: https://cambium.inria.fr/blog/kmp/
Comments URL: https://news.ycombinator.com/item?id=43602889
Points: 1
# Comments: 0
Firestore client with JSON editing and custom queries
Article URL: https://fireblaze.app/
Comments URL: https://news.ycombinator.com/item?id=43602841
Points: 1
# Comments: 0
U.S. Space Force awards billions to Space X
Microsoft's Quake 2 AI experiment sparks negative reactions
Article URL: https://www.videogameschronicle.com/news/microsofts-quake-2-ai-experiment-sparks-negative-reactions/
Comments URL: https://news.ycombinator.com/item?id=43602809
Points: 3
# Comments: 0
Peter Navarro Invented an Expert for His Books, Based on Himself(2019)
Article URL: https://www.nytimes.com/2019/10/16/us/politics/peter-navarro-ron-vara.html
Comments URL: https://news.ycombinator.com/item?id=43602777
Points: 5
# Comments: 0
Liquid Powder Display
Article URL: https://bsky.app/profile/wenting.bsky.social/post/3lm45tgsud22g
Comments URL: https://news.ycombinator.com/item?id=43602775
Points: 2
# Comments: 0
Trump will make China great again
Article URL: https://unherd.com/2025/04/trump-will-make-china-great-again/
Comments URL: https://news.ycombinator.com/item?id=43602771
Points: 6
# Comments: 0
Ask HN: How are you building side income streams with AI?
In the past, I built an automated cashback and promo code aggregator https://touslescashbacks.com/ that generated a few hundred euros monthly through SEO. I'm now exploring AI-driven side income opportunities and would love to hear about others' experiences and projects in this area.
Comments URL: https://news.ycombinator.com/item?id=43602764
Points: 1
# Comments: 0
A Japanese entrepreneur built Ethiopia's fastest-growing EV maker
Article URL: https://restofworld.org/2025/dodai-ethiopia-fastest-growing-ev-startup-battery-swapping/
Comments URL: https://news.ycombinator.com/item?id=43602758
Points: 2
# Comments: 0
Space Exploration Logo Archive
Article URL: https://www.creativeboom.com/news/space-exploration-logo-archive/
Comments URL: https://news.ycombinator.com/item?id=43602736
Points: 1
# Comments: 0
'Netflix levy' would 'price out' consumers
Article URL: https://www.rte.ie/news/2025/0406/1506141-netflix-levy-ireland/
Comments URL: https://news.ycombinator.com/item?id=43602712
Points: 3
# Comments: 1
Small Businesses Face a 'Tornado' of Challenges: Cuts, Freezes and Now Tariffs
Article URL: https://www.nytimes.com/2025/04/06/business/economy/trump-tariffs-small-business.html
Comments URL: https://news.ycombinator.com/item?id=43602706
Points: 2
# Comments: 0
Seek What Outcomes via Futarchy?
Article URL: https://www.overcomingbias.com/p/seek-what-outcomes-via-futarchy
Comments URL: https://news.ycombinator.com/item?id=43602698
Points: 1
# Comments: 0
Born in the Wrong Generation
Article URL: https://samkriss.substack.com/p/born-in-the-wrong-generation
Comments URL: https://news.ycombinator.com/item?id=43602691
Points: 1
# Comments: 0
Hiding elements that require JavaScript without JavaScript
Article URL: https://0xda.de/blog/2025/04/hiding-elements-that-require-javascript-without-javascript/
Comments URL: https://news.ycombinator.com/item?id=43602688
Points: 3
# Comments: 0
How much leisure do we need?
Article URL: https://ivy0.substack.com/p/how-much-leisure-do-we-need
Comments URL: https://news.ycombinator.com/item?id=43602657
Points: 1
# Comments: 0