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rohan_

224 karma · joined June 10, 2016

Developer in NYC.
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rohan_··on Supabase Realtime: Architecture
Is it guaranteed that the message will be delivered? Or that the elixir server will be able to send all messages?

Seems ripe for consistency issues.

rohan_··on It's weird how design systems are so rote, yet so difficult
I was reading about the design decisions made when building the shadcn library. It's actually pretty fascinating: https://manupa.dev/blog/anatomy-of-shadcn-ui
rohan_··on Who would give this guy millions to build his own Utopia
Written in the style of a gossip rag. Clearly a hit piece.
rohan_··on The economics of college vs. the economics of private tutors (2020)
this is a very one-dimensional analysis.

It doesn't factor in the network you gain from college, chance to collaborate with others, opportunity to find romantic partners, etc...

rohan_··on Study: Carbon offsets aren’t doing their job, overstate impact
doesn't this just mean they're priced incorrectly?

like can't you have different ratings for different carbon credit products - the more accurate ones are priced higher?

rohan_··on Ask HN: Mosquito Killing / Preventing Innovations
Just turn the fan on. This problem was solved a hundred years ago.
rohan_··on Tremor – The React library to build dashboards fast
Things like this really need corresponding figma components as well.
rohan_··on Superconductor news: What’s claimed, and how strong the evidence seems to be
What do the "super forecasters" have to say about this? Was this predicted on prediction markets? Was the assumption of this tech existing already factored into prediction models?
rohan_··on Rewind.ai now available for iPhone
Wireshark? Little snitch?
rohan_··on AGI Simulator
It's very unclear what the book emoji is and how to improve it's rate of increase.
rohan_··on With plugins, GPT-4 posts GitHub issue without being instructed to
For retrievals I don't see the value with human-in-the-loop. For endpoints that modify / create data, I see the value in having a human-in-the-loop step.

It does seem up to the plugin developer to introduce that human-in-the-loop step though.

rohan_··on Tips for Building Resilient Payment Systems (2022)
I wish they talked more about maintaining consistency. How exactly does the reconciling of their records with their financial partner’s records work? Is it an asynchronous job that’s run on a schedule?

Also I’m sure they have dual-write consistency problems, how exactly do they solve that? 2PC? Event sourcing? Outbox?

rohan_··on Pilots abort landings at SFO after spotting plane in their path
https://archive.is/hGnsY
rohan_··on US Air Force shoots down drone swarm with THOR microwave weapon
Defense engineers have more fun!
rohan_··on Ben McKenzie: Crypto is a Ponzi Scheme [video][4 mins]
How is Ben Mckenzie's opinion on "crypto" relevant to HN?
rohan_··on Apple passwords deserve an app
Windows only
rohan_··on Apple passwords deserve an app
>(And it all syncs across your devices, for free?!)

IMO the worst part about apple keychain is they can't be used with Chrome (the most common browser for mac!)

rohan_··on Online daters are less open-minded than their filters suggest
Anecdotally I've found the opposite. Whenever I see a couple that didn't meet on dating apps, I ask the woman if she would have swiped right on the man if she _did_ see him on an app, she always says "no". It seems women are way less picky when meeting in-person.
rohan_··on Show HN: Lofi, a Tiny Spotify Player
This is like the winamp mini player
rohan_··on Aboriginal Australian genomes reveal Indian ancestry (2013)
Sorry for my tone, I didn’t mean to come off as rude. It’s understandable why one would be confused here.
rohan_··on Aboriginal Australian genomes reveal Indian ancestry (2013)
dravidian languages are not indo-european
rohan_··on Cambridge Analytica’s Black Ops Team Exposed
Hasn't this been thoroughly debunked here before? Cambridge Analytica had very little effect on the election outcomes.
rohan_··on Instagram and Facebook to get paid-for verification
Bad telecom actors exploit apps that send SMS - twitter was losing 60M to this fraud. In twitter's case, they found 390 fraudulent international telcos.
rohan_··on 200-year old heat pump technology is back
Every HVAC company I've talked to in Houston has advised me against heat pumps. Mainly, natural gas is so cheap in Texas that the cost benefit analysis doesn't work out.
rohan_··on Landscape is an Urbit-native toolkit for staying connected with your friends
If Tlon was serious about Urbit they would swap out Hoon with something more practical.
rohan_··on Databricks cofounders weren’t interested in starting a business (2021)
>Users feed in their data and the AI makes predictions about the future. John Deere, for example, installs sensors in its farm equipment to measure things like engine temperature and hours of use. Databricks uses this raw data to predict when a tractor is likely to break down.

I'm pretty sure this is not what databricks does. Isn't databricks just a way to run queries on unstructured data? Or am I thinking of something else?

rohan_··on US companies are producing heat pumps that work below -20F
The furnace at my mother's house in Houston went out and I tried to get her HVAC guy to replace it with a heat pump. (The AC is 30 years old and also needs to be replaced) He clearly had no idea what a heat pump is and came up with the following excuses to not install a heatpump:

1. Heat pumps are only for extremely cold weather

2. The heat from heatpumps is too hot, they only install them at elder care facilities where they need extra heat

3. It's far more complicated than a furnace / AC setup, and will require a lot more maintenance.

Not sure what this all means for the industry if common HVAC guys don't even know about heat pumps yet.

rohan_··on CT scan shows there's still lots of toner left in an “empty” cartridge
Does it? It’s a dying industry. When was the last time you printed anything?
rohan_··on Tesla engineers were on-site to evaluate the Twitter staff’s code, workers said
I wonder how much damage short-sellers & tech journalism have caused tesla through twitter? There might be some business justification here.
rohan_··on Cisco's Webex phoned home audio telemetry even when muted
Nothing to see here:

"Cisco is aware of this report, and thanks the researchers for notifying us about their research," said a Cisco spokesperson. "Webex uses microphone telemetry data to tell a user they are muted, referred to as the 'mute notification' feature. Cisco takes the security of its products very seriously, and this is not a vulnerability in Webex."

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