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jtchang

5,764 karma · joined July 28, 2010

jeff.tchang (at) gmail.com jeff (at) literatorapp.com

[ my public key: https://keybase.io/tachang; my proof: https://keybase.io/tachang/sigs/3k4EnKOxZt-oQ7OIWzClI8l0yzGg3pl4mvp040CRyDQ ]

d5b3b0

Creator of OpenMiko (opensource firmware for security cameras) https://github.com/openmiko/openmiko

submissionscomments
jtchang··on “One Day Longer and Those 13 Boys Would Be Dead”
It's only after the rescue that they can give retrospectives on exactly how difficult things were at the time. My utmost respect goes out to each of these heroes for doing what needed to be done even at the possible cost of their own lives.
jtchang··on How to get better at painting without painting anything (2015)
Anyone who plays an instrument knows the value of drilling. Yes it can be boring. But it is needed to get better. You really need to get down to each note and make it perfect before you can play the measure or piece.
jtchang··on Learning Squeak (2019)
I had a whole semester worth of Squeak at Georgia Tech. Can't really remember much at this point except that everything was an object and the environment we worked in was super slow.
jtchang··on “Space age electronics”: Inside a GE thin-film paperweight from the 1960s
Why gold wires instead of copper?
jtchang··on The “success isn't based on hard work” crowd
This entire article is a straw man. "It’s trendy to argue that hard work doesn’t pay off."

I think what we should be looking at is the amount of luck required to succeed. And that is most definitely increasing.

However it isn't just luck vs hard work. Hard work leads to creating more luck.

jtchang··on AMD vs. Intel CPU Market Share
I buy servers. AMD based ones aren't available. That's it. I am waiting for them to be readily available and at a reasonable price point.
jtchang··on The US military is starting to get interested in Starship
Why does it need to relaunch? You now have a forward operating base that can secure the rocket. You can break the rocket apart and truck it back. Or put it on a ship. Lots of options here. The important part is probably getting there in 1 hour not necessarily getting back quickly.
jtchang··on Chinese ‘Artificial Sun’ experimental fusion reactor sets world record
Seeing humanity achieve net fusion in my lifetime would be a total game changer and repoint a good chunk of our future. Things like this make me think we are closer than most people imagine if only because climate change is pushing is hard in this direction. Not only are the economics starting to make sense but also the political will to make this a reality before we all roast due to climate change.
jtchang··on Video uploads now available across GitHub
For mac? I have problems seeing any good download site.
jtchang··on DarkSide ransomware gang quits after servers, Bitcoin stash seized
Exactly. Also not sure why everyone says Bitcoin is anonymous. It's as anonymous as how deep someone is willing to spend to uncover your address. If we are talking multiple nation states who are interested in tracking you down you are pretty much screwed.
jtchang··on DarkSide ransomware gang quits after servers, Bitcoin stash seized
Just like the mob there are some targets that just aren't worth it because they bring too much heat. They are learning this is bad for business all around so they are stepping back and encouraging others to do the same.
jtchang··on FragAttacks: new security vulnerabilities that affect wi-fi devices
I wonder if hardcoding your DNS servers will help. I guess sometimes this is not possible because in corporate environments DNS servers are sent via DHCP.
jtchang··on People who live past 105 years old have genes that stop DNA damage
The societal ramifications of a large number of people living past 100 would be unprecedented.
jtchang··on U.S.'s Biggest Gasoline Pipeline Halted After Cyberattack
Depends on your setup but a message bus architecture with polling would work.
jtchang··on U.S.'s Biggest Gasoline Pipeline Halted After Cyberattack
In a twisted sort of way I am happy to see these types of ransomware attacks making headlines. Before it was much harder to quantify how much a breach might cost but with ransomeware you get a fuzzy lower bound. Also the prevalence of these attacks might actually make us all safer in the long run.
jtchang··on Two Years of Squash Merge (2019)
> Squash merge has the major disadvantage of getting rid of valuable meaningful git history.

There are reasons against it but the real world is messy. Developers tend to commit things, recommit, undo, redo, move things around. Is this valuable history? It can be but I would say 99% of the time it's more valuable to have a good commit message about what was intended rather than what actually happened.

The idea of squash merge is to make the history clean from the get-go as you said.

jtchang··on Ask HN: How would you store 10PB of data for your startup today?
I would host in a datacenter of your choice and do a cross connect into AWS: https://aws.amazon.com/directconnect/pricing/

This allows you to read the data into AWS instances at no cost and process it as needed since there is 0 cost for ingress into AWS. I have some experience with this (hosting using Equinix)

jtchang··on UMN CS&E Statement on Linux Kernel Research
It's not just the linux kernel. You can imagine this having some fallout to other open source projects where they all come out and say they won't accept contributions from the university. Huge PR nightmare.
jtchang··on Ask HN: What Are You Working On?
Still working on https://github.com/openmiko/openmiko - a fully open source firmware for security cameras that doesn't require some cloud server. Privacy and security oriented.
jtchang··on Two people killed in fiery Tesla crash with no one driving
Is not using water to fight a lithium fire not a good idea?
jtchang··on Internet-monitoring – A Docker stack that monitors your home network
I've been toying around with the idea of building a small device or widget to display things like this. There is hardware like this for temperature and humidity and such but nothing for internet health.

If anyone is interested feel free to contact me. Would love to learn about what you would want in such a device.

jtchang··on Odds of Dying
And here I am looking down the list for the odds of not dying. Dammit.
jtchang··on Why 11 days disappeared in 1752
Just thinking about the number of edge cases if this happened today gives me palpitations.

And I thought this whole daylight saving time thing is ridiculous. Hold my beer, along comes the Church of England.

jtchang··on Netscape ISP Homepage
Holy those pages load fast. Design feels slightly dated but the speed is fantastic.
jtchang··on Ask HN: Programmer Existential Crisis
Replacement firmware for IP cameras that has no need to go to the cloud: https://github.com/openmiko/openmiko
jtchang··on Ask HN: What's the cheapest way to maintain a corporation?
Which state do you use?
jtchang··on Extreme weather events of 535–536
Could we survive today if this happened? A year without any crop yields?
jtchang··on Wrecking sandwich traders for fun and profit
This actually makes me like blockchain technologies more. Finance has always been a game. A game in which the price of entry can be prohibitively high to a lot of people.

Blockchain really levels the playing field. People are free to play the game (and metagame) with virtually no cost of entry besides time.

Granted this may change as the meta evolves. Bigger players with more resources may be able to find new "exploits". However the risk increases as well and there has never been this much financial leverage introduced as with blockchain.

jtchang··on Israel's first new bank since 1978
I know someone who was seriously trying to start a bank. After all his research he concluded that starting a bank from scratch was cost prohibitive. However buying an existing bank was way easier.

For the US the amount of regulation that banks have to comply with is enormous. I'm not entirely sure all of it is value add. In contrast bitcoin has almost no regulations or controls around it. Is there not anything in between?

jtchang··on I Don’t ‘Do’ Arduino
This is such an ivory tower kind of viewpoint. Thinking like this we'd never have high level languages and tools that make life easier for everyone.

I recently got into hardware during the past year. The learning curve (especially on the software side of hardware) is quite steep. Also the toolchains suck. Coming from a webdev world it is night and day as to the amount of open source code out there that helps you get started. Arduino helps chip away at that steep learning curve and I wish there were more projects like it.

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