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cobookman

2,226 karma · joined April 19, 2013

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cobookman··on Crypto enthusiasts want to buy an NBA team, after not purchasing US Constitution
Welcome to (a large number of) cryptocurrencies in a nutshell.
cobookman··on Democrats want to give a tax cut to the top%, 6x bigger than any other bracket
I'm surprised Democrats haven't made taking a loan against an asset a taxible capital-gains event.
cobookman··on USC pushed a $115k online degree – graduates got low salaries, huge debts
US Government gets paid back also through tax revenues on the salaries of the school, salaries of studends, expenditures of the schools to US based companies, etc.

It might still be favorable for the US Tax Payer even if these loans end up un-paid.

cobookman··on Where have all the insects gone?
population growth is starting to recede. Most 1st world countries are growing through immigration, with a birth rate that is too low to support our population.

We are trending towards having a smaller population in 100 years.

EU Birth rate over time: https://www.statista.com/statistics/1251516/crude-birth-rate...

US Birth rate is 1.7 kids per female.

cobookman··on Ask HN: Best way to host a website for 500 years?
Store the content on the bitcoin blockchain. Expensive but it'll be available for 500+ years
cobookman··on Tether Discussion featuring Bennett Tomlin and George Noble
Sometimes I wonder if this is how Michael Burry and others felt before the housing crash.

Right before the housing crash, most the in-industry folks were fully aware it was unsustainable, but they felt it would continue long term. Same goes for tether, majority of those involved in crypto know what they are doing, and the pump-up effect it's had to crypto.

cobookman··on The Apple A15 SoC Performance Review: Faster and More Efficient
100% the m1 reminds me of the leap from a BlackBerry to my first iPhone. With my m1 laptop, I never have to worry about bringing my charger. My intel MBP always had slowdowns, with my M1 I've never noticed a slowdown.

The m1's compute/watt will enable designers to change the dimensions of a laptop to be even smaller and compact. If the iphone's a15 starts to be near m1 compute-power, we could actually see the iPhone merge to become the device powering our monitors and keyboards. The new possibilities of such a revolutionary technology is endless!

cobookman··on A bit of math around Cloudflare's R2 pricing model
durability != uptime. The 11 9s of durability encompass the likelihood they'd loose your data.
cobookman··on How to fit any dataset with a single parameter
Up until ARG_MAX is reached, or you run out of RAM that is... https://serverfault.com/a/844666
cobookman··on Half of American kids have lead in their blood, doctors say
It's shameful the EPA still hasn't banned leaded aviation fuel.
cobookman··on Google’s new ad goes full Jony Ive on the Pixel 5A headphone jack
I used to think i needed a headphone jack. Then I got bluetooth headsets and I honestly wouldn't go back.
cobookman··on Apple has surpassed Facebook and Google in violating user trust
Funny too as both Alphabet & Facebook do CSAM Detection. Believe iOS only uploads the neural-hash if & before the photos are uploaded to iCloud.

https://support.google.com/transparencyreport/answer/1033093...

https://www.theguardian.com/technology/2014/aug/04/google-ch...

https://indianexpress.com/article/technology/tech-news-techn...

cobookman··on Welcoming our first riders in San Francisco
Waymo has raised 5.5B so far. How much does it cost to add a market and how long will it take to recoup those costs?

How much are Waymo vehicle operational costs vs rider revenue? How long do Waymo vehicles last?

Even with this announcement, we do not know if Waymo has a clear path to profitability.

cobookman··on Policy groups ask Apple to drop plans to inspect messages, scan for abuse images
As a cloud photo hosting provider (iCloud) they might legally be required to (IANAL).

Google [1], Dropbox [2], Microsoft [3], and many many other Photo Cloud storage providers have implemented similar child porn detection.

[1] https://www.columbiatribune.com/story/news/crime/2021/03/22/...

[2] https://gizmodo.com/dropbox-refuses-to-explain-its-mysteriou...

[3] https://www.local10.com/news/local/2020/02/21/microsoft-aler...

cobookman··on Jewish Problems (2011)
As did Emory: https://www.cbsnews.com/news/emory-apologizes-for-past-discr...
cobookman··on Tesla 2Q 2021 Quarterly Result
I find that the model S doesn't have enough 'premium' to be justified over a model 3.

That is unless you're looking at the model S plaid, but I can't envision huge demand for a car starting at 129k.

cobookman··on A 3°C world has no safe place
US uses 118B gallons of water/day in agricultural usage. Desal costs about 2k/acre-foot (325,851 gallons).

That's ~724MM/day in water costs or 264B/year for water. US GDP is 21 Trillion.

As cost of water increases, conservation becomes more economical. Say all agriculture switches to hydroponics as a result. Hydroponics uses 1/10th the water of traditional methods...so we're talking now just 26B/year of water costs.

In 2017 US farms spent 359B on operations.

Food will become more expensive, but overall we'll be fine.

cobookman··on A 3°C world has no safe place
Lack of fresh water in the US is a solvable issue. We have oceans all around us and the US has the know-how to ship fresh, desalinated water from the coast to middle america.
cobookman··on Tesla’s $16k Quote for a $700 Fix Is Why Right to Repair Matters
Especially since the used battery pack would likely fetch 11k+ on ebay.
cobookman··on Whistleblower thought he would get a big payout, but got nothing and went broke
The investors ONLY saw a 28.5% loss (1B/1.4B). In the scheme of things it could have been way worse if the whistleblower didn't speak up. If they gave say 1% of the assets to the whistleblower (10 Million), it wouldn't have really changed the investor payout all that much. BUT it would encourage future whistleblowers. Especially when the whistleblower speaking up earlier prevent further losses to impacted investors.
cobookman··on We're Levels.fyi, the most accurate resource for tech salaries, ask us anything
For employees you pay the same in taxes. RSUs are treated as income just in Stock based compensation vs USD. RSU vest is the same as taking a USD based salary and purchasing the shares.

The Employees do get the benefit that between the grant date and vest date, the RSU value could increase. And the employee gets the benefit of capturing that growth.

E.g. if 100k of RSUs granted, and 25% of it vested each year. Say in year 4 the value doubled. So they'd get 50k of RSUs and when it vests the employee is taxed as if it is income, and pays income tax on the 50k value.

cobookman··on Kubernetes a black hole of unpredictable spend, according to new report
pod A uses 2 cores, pod B uses 1 core. Machine has 4 cores and all remaining unscheduled pods require 2 cores.

How do you attribute the partial usage of the node? Is it 2 cores billed to pod A, 1 core billed to pod B, and 1 core billed to some random team?

Or do you have 2/3 of Node billed to pod A and 1/3 of Node billed to Pod B.

Now deal with this permutation across all the various variables.

cobookman··on The slow rise of robots in the data center
it is.

"Prior to FedRAMP, the Security Control Assessor (SCA) had to visit the data center to check the “gates, guards and guns” every single time, even if that specific assessor had previously visited that data center. That is no longer necessary. The FedRAMP ATO takes care of all of that"

https://www.linkedin.com/pulse/security-control-spotlight-in...

cobookman··on Why Did Congress Just Vote to Break Up Big Tech?
> how would Signal inter-communicate with e2ee intact with say, Facebook Messenger?

Couldn't you use Public Key Cryptography? Kind of like what we've done for encryption between the Web Browser and Service Provider using PKI+TLS (HTTPS).

Such-as...say each chat network having a certificate authority which crypto-signs each end-user's Public Key. With PKI used to encrypt messages between users. A 4096 PKI key can transmit 4KiB of data, which should be enough for most chat networks. For attachments or very large messages, can just copy how TLS uses PKI to transmit an AES key for decrypting a larger payload.

The user's Private Key(s) can remain on phone/browser. To keep traffic e2e encrypted.

cobookman··on Tracking the San Francisco Tech Exodus
Robinhood was in in Menlo Park / Palo Alto.

Here's a list of startups in Palo Alto: https://angel.co/location/palo-alto

Here's a list of startups in Menlo Park: https://angel.co/location/menlo-park

I'm sure if you have crunchbase pro you'd be able to do more analysis. But Silicon Valley is still pumping out a lot of startups, and high-tech firms.

cobookman··on AWS Partners with New Relic to Contribute to Pixie OSS
Super excited for what eBPF brings to the table, and how Pixie makes it accessible. It is empowering being able to have a centralized DevOps/SRE/Security team gain insights across all their applications running on Containers without needing to add any custom instrumentation.
cobookman··on Google is saving $1B per year as a result of employees working from home
and taxes. Buy lunch yourself, its on after-tax wages. Employer buys you lunch, it is a tax write off for the employer.

Income tax at the marginal tax rate can reach nearly 40% for some of these workers. So that $10 lunch would require a pay-raise of nearly $17 to break-even.

cobookman··on How Facebook encodes videos
Youtube and Facebook have a much different encoding problem then say HBO/Netflix/Hulu...etc

YT & FB have a few popular videos, and a ginormous long-tail. That long-tail needs to be encoded, and cheaply as it might not get many views.

The TV/Movie VOD over IP industry stands to benefit optimizing the encoding to have the smallest filesize with highest quality. Spending considerable CPU cycles to find that best quality path.

For those like Netflix, why would you invest with ASICs. You likely don't have a huge infra bill (relatively) when it comes to encoding. And CPU vs ASICs, the ASICs mean you loose flexibility to really fine-tune the quality and use the latest codecs.

For those like YT/FB. You just gotta encode that long tail. Getting something cheap that's 80% the quality of CPU-based encoding is good enough for 99% of the content.

cobookman··on India’s second wave
I'd expect in aggregate at the country level, its fairly accurate.

E.g. its unlikely deaths increased 100%+ across all of india due to existing death-causes.

cobookman··on SmartFarm device to harvest air moisture for self-sustaining urban farming
Yes and No. What percentage of the rain ended up back in the ocean? Suspect a very small percentage of rain actually ends up being used by humans.

You just need enough for the water that ends in taps or in the garden/farm.

I'm not saying this is preferred over desal, water recycling, or other water conservation/generation possibilities.

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