News for hackers. Stuff that matters.

radiusvector

Re:What Do We Know About the Microplastics Inside Us? on Wednesday July 08, 2026 @02:57PM (#48835964)
Did she debunk that article that was around microplastics in human testicles?
Agreed this is a real issue, one compounded by constant negative news cycles.

My little contribution in helping solve this issue is building and launching Clarion, an AI curator that filters for rational progress rather than noise -

https://clarion.today/

Re: on Sunday December 07, 2025 @09:47AM (#46182037)
New Jersey has launched an updated Energy Master Plan targeting 100% clean electricity by 2035 and significant reductions in climate pollution, building on previous initiatives.

Show HN: Clarion – AI system that rejects 97% of news into a high-signal digest

https://clarion.today/

Hey HN — I built this because opening the news started to feel like drinking from a firehose. The signal-to-noise ratio keeps dropping, and most feeds optimize for outrage, not insight.Clarion is a small AI editor that reads thousands of articles weekly, filters hard (~3% make it through), and surfaces only progress-focused stories. The goal: a clear weekly snapshot of what’s actually moving...

( Read More... | 1 comment | on HN )
I will look to fix those things. Care to share feedback here? Thanks

Show HN: Clarion: An AI-powered news curator emphasizing clarity over chaos

https://clarion.today/

I built Clarion to fight the sense that staying informed has to feel dreadful. It’s a news app that parses stories from 2,000+ global sources and uses frontier models to surface journalism with clarity, context, and progress — not panic. Built with Vite + React + TypeScript + Tailwind. Live at https://clarion.today — would love feedback on the curation logic, ranking heuristics, or model...

( Read More... | 2 comments | on HN )
Re:Ask HN: How to Get into Quantitative Trading? on Friday January 26, 2024 @09:17PM (#39151737)
Sure. A trade can be decomposed into entry and exit criteria.

Only trade when you have an edge, i.e your model suggests that there is a higher probability of an outcome in your favor rather than a pure coin toss - either in entry or in exit.

Even coin toss entries can make money if you have an edge in exits and vice versa.

All in all, you can be right less than 50% of the time per trade, and still have alpha if your winning trade is 2 times your losing trade. Standard expected value stuff. Heck, I know traders who bat 30 or 35% and make colossal amounts of dollars.

Re:Ask HN: How to Get into Quantitative Trading? on Friday January 26, 2024 @03:48PM (#39148080)
I'm a trader who runs a couple of profitable strategies. You can generate alpha by implementing quantitative (or discretionary) strategies as long as you adhere to the basic principles of profitable trading with a strong emphasis on risk management. There are a million possible trading strategies, which of these will suit your personality/risk tolerance/system design is a matter of personal choice.
Re:Global CO2 Levels on Monday October 30, 2023 @02:24PM (#38073544)
Meanwhile Marc Andreesen thinks technology is going to solve everything forever and for everyone
Re:Sundar will be the CEO of both Google and Alphabet on Tuesday December 03, 2019 @04:43PM (#21697050)
Wow, Sundar is truly phenomenal.
Re:Harvesting LinkedIn data for fun and profit on Wednesday September 11, 2019 @11:17AM (#20941041)
Where's the profit part? How did you monetize stolen data?
> MBA ideas of an economic moat - lock-in, stickiness, etc - are "dark patterns".

Dramatic statement. I am an SWE and an MBA. There are merits to thinking about every aspect of the business. Tech/Product is just one - an important one in a Saas company, but still just one.

> But there are "light patterns": you can stay ahead in a technological race if you keep running;

This is another way of saying "build it and they will come". You have to combine good business/economic sense with great products.

Apple didn't just get to be Apple by staying ahead in a technological race. Arguably, they are behind a lot of other phone makers in specs. But they have a lot of people thinking about ecosystems, lock-in, marketing and other "MBA" concepts.

Strategy discussion aside, a 4% risk of ruin is not “low” by any means. A sophisticated investor would never accept.
Re:Bitcoin Spreads Like a Virus on Thursday March 21, 2019 @01:47PM (#19455179)
> a deflationary currency means that you're better off holding it than investing it.

It is ridiculous to assume that any artificially designed deflationary digital asset will produce long term returns greater than an index like SPY, which is intrinsically tied to human productivity in the economy.

An average, semi-rational investor will always have the incentive to lend to a credit worthy person/business/asset, regardless of how much artificial deflation you can induce in your asset.

Re:Bitcoin Spreads Like a Virus on Thursday March 21, 2019 @12:19PM (#19454083)
Just the deflationary nature of a currency isn't enough to destabilize cycles. Cycles run on credit-worthiness, or how likely is someone to return x% return in the future on an investment made today.

Compared to the Fed, which makes arbitrary (non-cyclical) adjustments to the "cost of money", Bitcoin's more predictable deflationary attributes might lead to more predictability in financial cycles.

This is of course, assuming the hundreds of other problems with Bitcoin as a currency, or credit-instrument have been solved.

Re:Bitcoin Spreads Like a Virus on Thursday March 21, 2019 @12:08PM (#19453956)
The "currency" use-case has not proliferated or reached adoption at a scale (by any measure) that would make it a worthy medium of exchange, which fundamentally is the definition of a currency.
Re:Bitcoin Spreads Like a Virus on Thursday March 21, 2019 @11:43AM (#19453657)
I think the analogy with FB might be interesting, but intrinsically inaccurate.

The value people get from FB is related to the value of other people being on the network, but there is an intrinsic value drived from the different use cases on the platform - photos, messaging, likes, fomo and what not. Which has directly been monetized using advertising.

The value you get from other people using Bitcoin is that the price goes up, without any other intrinsic value aside from "Maybe my investment grows" - in effect following the 'greater fool' theory (Buffett), or the 'castle in the air' theory (Malkiel et al).

Re:Company Update on Friday January 18, 2019 @06:16AM (#18938528)
Hopefully a lot? The SolarCity acquisition seemed shoddy to begin with.
Re:Estimating Value of Facebook by Paying Users to Stop Using It on Wednesday December 19, 2018 @05:52PM (#18720684)
Interestingly, I see a pattern of a strong anti-network effect in play.

Network effects are premised on the value of the network increasing in value as more users join. By definition then, the value of the network drops as people drop off.

While the speed of adoption might always be > speed of deletion, there is certainly an auto-catalytic effect to people deleting FB, or not using/posting to FB as much.

Re:The Yoda of Silicon Valley on Monday December 17, 2018 @04:08PM (#18702235)
My Uncle is a researcher and has one of those famous checks from Knuth for pointing out an error in the book. Needless to say, he never intends on cashing it in, and treats it like a little trophy.
This just feels like propaganda from the meat industry. For every bit of scientific research touting the demerits of industrial-scale farming, the meat industry is incentivized to fight back.
Re:YC Top Companies List on Friday October 19, 2018 @12:05PM (#18257685)
Cohort by year. From the wine industry.
Re:YC Top Companies List on Wednesday October 17, 2018 @05:33PM (#18244026)
Re:YC Top Companies List on Wednesday October 17, 2018 @05:33PM (#18244024)
Agreed. I just did a deep dive on this data - https://sridharsmusic.com/analyzing-ycs-top-100-companies-li...
Re:Introducing Multi-Leg Options Strategies on Wednesday June 13, 2018 @12:54PM (#17304844)
Could you give me a concrete example?

To me, it sounds like you are describing a naked short call, or a short put.

It is not a spread. By definition, spreads have limited risk, and limited rewards.

The four main types of spreads. Take a look at the PNL diagrams. It is limited risk. https://www.optionseducation.org/strategies_advanced_concept... https://www.optionseducation.org/strategies_advanced_concept... https://www.optionseducation.org/strategies_advanced_concept... https://www.optionseducation.org/strategies_advanced_concept...

Re:Introducing Multi-Leg Options Strategies on Wednesday June 13, 2018 @11:49AM (#17304197)
How can you "wipe out" your account if you don't close a spread? AFAIK Robinhood does not allow for naked calls/puts or selling strangles without a collateral upfront.

Older »