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ivankirigin

12,988 karma · joined July 9, 2007

I just started investing full time, writing about it here: https://write.kirigin.com

I just left Lyft, which acquired YesGraph, my second startup in YC W15.

That was my second time through YC, after Tipjoy in YC W08. Then came Facebook and early Dropbox.

Elsewhere:

http://twitter.com/ikirigin

http://www.facebook.com/ikirigin

http://www.linkedin.com/in/kirigin

#--hackrtrackr:2KEQQijZPlpoGGGP3EinccpAquYRTh#

submissionscomments
ivankirigin··on New statue in London, attributed to Banksy, of a suited man, blinded by a flag
What is the emblem on the flag? Don't know. What is he fighting for? Don't know. How is he blind? What doesn't he see? What is behind or ahead? Don't know.

Being cynical that all effort is wasted is played out at this point. Fight for something real. Name what you're against. It should be easy in the UK.

ivankirigin··on Learn Your Way: Reimagining Textbooks with Generative AI
Shocking they didn't have a printed book for a control, in addition to a digital reader.
ivankirigin··on Learn Your Way: Reimagining Textbooks with Generative AI
Shocking they didn't have a printed book control.
ivankirigin··on I'm Peter Roberts, immigration attorney who does work for YC and startups. AMA
Why aren’t there tech startup immigration sanctuary cities? We have local authorities not working with the feds for referring criminals to ICE. Could you have the same for software engineers?
ivankirigin··on I'm Peter Roberts, immigration attorney who does work for YC and startups. AMA
Are there promising AI startups that can help with immigration?
ivankirigin··on DOJ sues realpage for algorithmic pricing scheme that harms renters
We’ll try anything to lower prices except building more
ivankirigin··on RoboCat – A Self-Improving Robotic Agent
"We demonstrate shredded furniture RoboCat had never previously seen"
ivankirigin··on We should not let the Earth overheat
$20/ton CO2 for 1T tons is $20T. Paid over 40 years, this is less than the interest we in the US pay on federal debt.
ivankirigin··on How to start a rocket engine
This makes me want to go back to school and major in aero/astro engineering.
ivankirigin··on Ask HN: What game do you wish existed?
I want a perfect simulation of our world - that then gets a zombie infection.

I want my street, my house, and general geography to matter in the game. Where is the hardware store? Army bases? Water?

The game starts with a limited infection, making police response to your murdering an infected neighbor problematic. The simulation models how agents would respond.

You win by killing all the zombies, whether that's year 1 or 10. If needed, that's 7 billion.

The exhaust could be a good city simulator, zombies off, which you sell to local governments.

ivankirigin··on Ask HN: How to track flying objects?
If the drones localize, you can get a constantly updating position over radio. Even with other tools, this will help disambiguate.

There are a few different parts here from robotics that can help.

  - Tracking allows you find a how a patch of pixels move. Look up "klt" and "SIFT features". Older
  - Recognition allows you to find a given object. Look up "yolo". Newer
  - Motion modeling allows you to predict where something should be, and can include the transponder ego data. Look up "kalman filter" 
  - All three of the above should be available in existing libraries
  - If possible, engineer the environment, like putting easy to spot LED patterns on the drones. This is always the easiest
ivankirigin··on Why U.S. Infrastructure Costs So Much
Regulations slow the pace of building.

Good article here: https://medium.com/cgo-benchmark/why-are-we-so-slow-today-c3...

Good recent discussion here, including other incentives: https://www.youtube.com/watch?v=bzMTlBddJ-E

ivankirigin··on Why U.S. Infrastructure Costs So Much
NEPA
ivankirigin··on When “Foundation” Gets the Blockbuster Treatment, Asimov’s Vision Gets Lost
I don't understand why more "unfilmable" books don't get launched as an animated series. Maybe execs think adults wouldn't watch it?
ivankirigin··on We need to take CO2 out of the sky
Biomass that falls into the deep ocean doesn't quickly cycle back into the carbon cycle, so some companies are look at the opposite, with the deep ocean as a sink. https://www.phykos.co/

But your idea is somewhat correct, and it has to do with desalinization tailings. There are companies like Heimdal which can take the high mineral runoff from desalinization and use it to make concrete. https://www.ycombinator.com/companies/heimdal

ivankirigin··on We need to take CO2 out of the sky
I like that you're using spatial analogies because it helps drive the point home. I visualized 50B tCO2 here: https://twitter.com/ikirigin/status/1425879839886626826

While it seems enormous, it's a very small fraction of the world.

ivankirigin··on We need to take CO2 out of the sky
Soil contains 4X the amount of carbon than in the atmosphere, so while scale is enormous, it isn't impossible.

The post goes through numerous sequestration techniques that could reach the scale to sequester 1000B tCO2e

ivankirigin··on Big oil coined ‘carbon footprints’ to blame us for their greed
Blaming supply or demand when you have an unpriced negative externality doesn't make sense. Tax carbon, and use the funds to pay for decarbonization. We'll get better and cheaper alternatives and carbon sinks.

Many quote $100 to $1000/tCO2e. But if we get down to $10, getting to net zero and negative won't break the bank.

ivankirigin··on Raising a VC Fund in Public
Hey folks - OP here.

Part of what I'm doing here is trying to illuminate VC for those on the outside. The switch to 506c means I can blog a lot more openly and answer questions. Normally you only see "we closed" announcements, not a fund in process.

If you have questions or comments, I'd love to hear them.

ivankirigin··on Launch HN: Aviron (YC W21) – High-Intensity Peloton for Rowing
So fish-game on the Concept2 isn't enough for yall?
ivankirigin··on Building Factories in Space
Watch the full interview here: https://www.youtube.com/watch?v=Oc9CogVgXN8

The projection of decreasing launch costs is really exciting. From $5K/kg to $3K with sights on $50-$100. Huge implications! If launch is $1M, you will spend that much to design your satellite. At $50K launch, you spend less.

I couldn't help but think of this analogous to web tech. It used to cost millions to launch a dotcom. When it came down, we found a Cambrian explosion of startups and the web really got going.

ivankirigin··on San Mateo County Health Officer Statement on Bay Area Stay-at-Home Orders
And age, race, types of jobs, family structure, trust in authority, education, and probably more.

San Carlos is white, rich, and old. East Palo Alto it not.

ivankirigin··on San Mateo County Health Officer Statement on Bay Area Stay-at-Home Orders
This is a surprisingly coherent. I live in San Mateo County.

One thing I've noticed is that the cases are not evenly distributed.

  California has 600/1M new cases, vs 1000/M in South Dakota.
  LA county has 740/1M. San Mateo County has 313/1M.
  Within San Mateo County, San Carlos is 119/1M, and East Palo Alto is 675/1M.
It's incredibly hard to set policy when everything is so different, down to towns with 30K people a few miles apart.

Links:

https://covidtracking.com/data/state/south-dakota

https://public.tableau.com/views/COVID-19CasesDashboard_1593...

https://www.smchealth.org/data-dashboard/cases-city

ivankirigin··on Authentic Developer Marketing
Meta: I almost never see "trailers" for jobs, or even concise video interviews about mission. My goal here is to change that and showcase specific companies concisely.

Email me any feedback: ivan@tango.vc

ivankirigin··on Ask HN: Teaching kids how to think?
Debate.

Learning how to represent both sides of an argument is both academically rigorous and opens kids to the idea that there are other sides.

You can do this at the dinner table, but also through formal debate clubs and classes. There are some doing this over zoom.

ivankirigin··on California to Require All New Vehicles Be Zero-Emission by 2035
This phases out car sales, not the cars. Lifecycle is 15 years, so we're looking at 2050.

For context, EVs are a few percent of sales in California, and almost zero for trucks.

ivankirigin··on Early Sales for Developer-Facing Startups
I love hearing from engineers building tools like this. If you're thinking about sales and marketing, get in touch: ivan@tango.vc
ivankirigin··on Working Session: Grow your Substack with referrals
I took a bunch of screenshots to prepare for the session, which are available here: https://www.tango.vc/posts/working-session
ivankirigin··on Woodman’s Markets to deploy aisle-roving robots
But there is a backroom to restock the shelves which is the real inventory. And that back room becomes the business when delivery goes mainstream. Some robotics solutions are about building a whole warehouse for that store room to fulfill online deliveries.
ivankirigin··on Orthodox Privilege
"Things you can't say" is interesting because the reason it's dangerous is that a mob might react badly to it. Who is to say that the specific wave washing over social media will hit some people with this orthodox privilege or not?

I think you can mine these things by looking at diverse conversations - including those you don't find online. What sentence would you be afraid might be misinterpreted?

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