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pranjalv123

582 karma · joined September 21, 2011

http://pranj.al
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pranjalv123··on Jeff Bezos' annual shareholders letter
Is stuff like "your workers shouldn't collapse of exhaustion because you don't want to air condition your warehouses" something so difficult to achieve at scale? Is it even a particularly high standard?

Maybe before talking about high standards, we should start with low standards.

pranjalv123··on You have options – Why we left the U.S. and moved back to Europe
Out of pocket maximums kick in eventually, unless you accidentally go to an out-of network provider, unless you lose your job and therefore your insurance, unless your insurance decides that a drug you need isn't covered, etc., etc., etc.
pranjalv123··on “If poor people knew how rich rich people are, there'd be riots in the streets”
Housing and pension wealth are a fundamentally different kind of wealth than, e.g. factories, farmland, businesses, rental properties etc.

The clearest contrast is between a house and a factory. If you own a factory, you have economic power - you can hire workers, pay them $X dollars, and get $X+Y dollars from what they produce.

The point is that housing and pension wealth doesn't produce surplus, whereas financial and business wealth does. I don't know if I fully understand the pensions argument, but I absolutely agree with the housing argument.

pranjalv123··on FCC approves first wireless power at a distance charging system
no it's not, you use a directional antenna or phased arrays and beamforming (which is what they're doing).
pranjalv123··on Evolution experiment has now followed 68k generations of bacteria
If mutations in a single generation are favorable more often than would happen by chance, this would be evidence of volitional choice. But we don't see this.
pranjalv123··on SIMD / GPU Friendly Branchless Binary Search
Sure, but you could run several searches in parallel on a SIMD architecture with this.
pranjalv123··on TV anchor says live on-air ‘Alexa, order me a dollhouse’
For some things, sure. But if I just want batteries or something? It's fine, and saves me some time.
pranjalv123··on TV anchor says live on-air ‘Alexa, order me a dollhouse’
Really? For me it will order whatever I ask for (it'll report the first result of the search, tell me the price, and ask if I want it).
pranjalv123··on India’s Call-Center Talents Put to a Criminal Use: Swindling Americans
eventually someone needs to buy digital assets from apple for the cards to be worth anything
pranjalv123··on Request for Startups: Water
Sea water is about 3.5% salt by weight [1]. The city of Los Angeles uses about 14 billion gallons of water in a month [2]. This works out to something like 2 million tons of salt being produced just by LA in a single month. So we can turn it into table salt... but it's something like six tons of table salt per year per person.

[1]: https://en.wikipedia.org/wiki/Seawater [2]: http://projects.scpr.org/applications/monthly-water-use/los-...

pranjalv123··on Adding up the cost of uncontrolled immigration
Except immigrants also increase demand.
pranjalv123··on ALPHA observes light spectrum of antimatter for first time
What? There are interactions that can never occur because they're forbidden by the laws of physics - you'll never violate conservation of [energy, baryon number, momentum, etc.] even with probability 10^-14.
pranjalv123··on The “dead and alive” cat myth
No, this is wrong. If the box is made of glass and you can see what's happening inside, the photons that reflect off the cat collapse the wavefunction so the cat really is alive or dead. In the case of the metal box and the completely isolated system, the cat is really in a fundamental way in a superposition of alive and dead - you can construct an experiment [1] that shows that entanglement can't be explained by local hidden variable theories.

[1]: https://en.wikipedia.org/wiki/CHSH_inequality

pranjalv123··on SeaHash: Explained
This isn't a cryptographic hash. SHA-256 and other cryptographic hashes are much slower, but give certain guarantees about difficulty of doing things like finding hash collisions. The advantage of SeaHash is that it's even faster than other commonly used non-cryptographic hashes, and has attractive statistical properties that will result in fewer collisions than other hash functions.
pranjalv123··on If You Can’t Follow Directions, You’ll End Up on Null Island
Lead acid has something like 1/4-1/3 the energy density, higher self-discharge rates, are more expensive, and are worse for the environment. The advantage is very high power density (nice for starting cars) and rechargeability, neither of which would be useful here.
pranjalv123··on Return of incandescent light bulbs as MIT makes them more efficient than LEDs
If you reflected all the infrared light, the efficiency would be 100%, since all the light leaving the bulb would be visible. Normally, the vast majority of the light leaving the bulb is infrared, but if you keep 90% of it in the bulb, then 6.6% of the light leaving the bulb is visible light.
pranjalv123··on Study Finds Pesticides Linked to Depression in Farmers
Given that this study is about pesticides, not herbicides, and glyphosate (RoundUp) wasn't one of the chemicals tested, I don't think there's any evidence for that here.
pranjalv123··on Is Aluminum Magnetic? (2013)
I don't think any of these examples actually imply anything about whether aluminum is "magnetic" (for any definition of magnetic).

All the demonstrations rely on a changing magnetic field, either because the magnet is moving, or because the aluminum is moving. This induces an electric field in the aluminum (as it would in any conductor) which moves the aluminum, induces a magnetic field which moves the magnet, etc., but is independent of whether aluminum is ferromagnetic, paramagnetic or diamagnetic.

pranjalv123··on A more modern Gmail app for Android
If I use the IMAP feature, do all my non-gmail emails get sent to Google?
pranjalv123··on The Affordable Care Act: Who Was Helped Most
The expected value of insurance is always lower than the cost, that's why someone sells it. The reason you buy insurance is to protect against catastrophic events, which are impossible to predict on an individual basis.
pranjalv123··on Stealth Tank Unveiled by Poland
It might be "invisible" only while standing still. This would still be strategically useful, at least from a defensive standpoint.
pranjalv123··on On the Typography of Flight-Deck Documentation (1992) [pdf]
I really dislike how sans-serif fonts conflate the lowercase "L" and the uppercase "i". This is a big problem in mail clients where someone can create email addresses that look identical to established addresses (e.g. Iarry@google.com).
pranjalv123··on Dawn of Autonomous Corporations, Powered by Bitcoin
You could use something like Shamir's Secret Sharing [0] to make sure that most of the funds would need multiple people to approve expenditures, and give small amounts of money to groups within the organization.

[0]: http://en.wikipedia.org/wiki/Shamir's_Secret_Sharing

pranjalv123··on Dear American Consumers: Please don’t start eating healthfully
Of course, most people don't have gluten-related inflammatory conditions, so whole wheat is good for them!
pranjalv123··on Sleep: Everything You Need to Know
I don't think that's true. A 16 oz Starbucks coffee has 330mg, while a 2oz Starbucks espresso has 150mg. So the espresso has 4x as much caffeine per ounce.

(http://www.cspinet.org/new/cafchart.htm)

pranjalv123··on Everything I knew about food was wrong
What do you think celery salt is? It's just sodium nitrate from a celery source! [http://en.wikipedia.org/wiki/Celery_salt]
pranjalv123··on Instructions for flashing a phone or tablet device with Ubuntu
It's illegal to unlock a carrier-locked device for use on another carrier. This doesn't do that; this unlocks the bootloader to allow you to load another OS.
pranjalv123··on NASA Rover Confirms First Drilled Mars Rock Sample
There's no air.
pranjalv123··on Google’s Crystal Ball
If Google searches can predict election outcomes this well, imagine what they can do for the stock market...
pranjalv123··on Nobel Prize in Economics awarded to Roth and Shapley for matching algorithm work
Several Nobels have been given out after a collaborator's death - probably the most famous being Watson and Crick's prize four years after Rosalind Frankin's death.
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