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danielharan

1,535 karma · joined July 17, 2007

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danielharan··on The MBA Myth and the Cult of the CEO
That does also suggest that rewarding with stock is not reasonable: if CEOs were actually motivated by money, they would go for easy mode instead.
danielharan··on Rappers, sorted by the size of their vocabulary (Updated January 16, 2019)
Taken aback that there's an artist that passed MC Solaar - although in this source, they report him using 7691 words out of the first 30,000.

http://www.slate.fr/story/93477/rap-francais-infographie-mc-...

danielharan··on Big Oil Doesn’t Like EV Subsidies, Just Its Own Giant Subsidy
Yeah, it's time value of money. There are many kinds of subsidies, including direct to consumer. If you're interested, the IEA's old reports mentioned here would be the best place to start (many countries have since cut their subsidies, so there's progress):

https://en.wikipedia.org/wiki/Energy_subsidies#IEA_position_...

danielharan··on Big Oil Doesn’t Like EV Subsidies, Just Its Own Giant Subsidy
An easy way to favour an industry is to allow them to write off assets faster than they're actually used up.

So while the amortization itself seems fair, many oil companies have lobbied for these types of changes, which together amount to hidden subsidies worth billions every year.

danielharan··on Oil Demand for Cars Is Already Falling
Beyond cars getting more efficient, a lot of cities have also dramatically reduced their share of trips made by car.

Paris reduced car mode share by 45% since 1990: https://www.citylab.com/transportation/2018/01/the-automotiv...

danielharan··on Carbon Removal Technologies
We're passed 400 ppm globally, and urban areas are much higher. Indoor air is often 1000 ppm - how many air changes do you need to get that down to a reasonable amount if your intake is around 450? 500?

And do we know for sure that 500-1000 is fine for cognition?

danielharan··on Carbon Removal Technologies
I'd like to propose a different scale removal, for anyone that may have the means to do it: home and office CO2 scrubbers.

CO2 concentrations are higher indoors, and they're affecting our cognitive ability. Atmospheric concentrations are going to be high for human cognition, especially in dense urban areas.

Better indoor ventilation will help, but if outdoor air already has higher than optimal CO2 concentrations, scrubbing that air is the only option left. Given the number of air changes needed (assuming 10X), a home unit would need to scrub CO2 from around 100,000 liters of air a day per person.

Small-scale removal is likely much more expensive than industrial BECCS or other carbon capture technology - but the value proposition would be fresher air for healthier, smarter workplaces and homes. Sell me cartridges of enzymes, and take spent ones with bicarbonate for reconditioning, and I can feel like I'm helping the planet a bit while making my life nicer.

https://thinkprogress.org/exclusive-elevated-co2-levels-dire...

danielharan··on Norway's Plan for a Fleet of Electric Planes
Most progress on clean energy doesn't come from the breakthroughs alone - you also need large deployment to bring costs down.

That's certainly what they appear to be doing with electric planes. This will spur innovation and lower prices.

danielharan··on Restaurants are figuring out how to do without servers
Do you remember how many language options there were? Adding many seems like a really good reason to replace humans with tech.
danielharan··on Computer personality judgments more accurate than those made by humans: study
One of the surprises with the Netflix prize contest was seeing how predictable people are.

You don't need 100 movies. 95% of the time, 6-10 movie ratings will be enough to figure out how you'd rate any other movie.

danielharan··on Photovoltaic growth: reality versus projections of the IEA
I don't think theirs specifically, but that type of problem is core to all these models. David Roberts has been complaining about this:

https://www.vox.com/2015/10/23/9604120/climate-models-uncert...

danielharan··on Bob Lutz: Kiss the good times goodbye
It'll work for the more than 80% of the USA that's urban, and a lot of places around the world.

After AVs are adopted in cities their prices will come down, and rural people that need cars will just have their own.

danielharan··on Elon Musk says he has a green light to build a NY-Philly-Baltimore-DC hyperloop
"The Boring Company's ambitions include reducing both the diameter of tunnels and increasing the speed of soft-soil boring machines to carve them. It wants to increase machine power and have them run on electricity instead of diesel, automate the process with fewer human operators, and tunnel continuously instead of erecting support structures. Noting that a snail is effectively 14 times faster than a soft-soil boring machine, the company says in bold that "our goal is to defeat a snail in a race." To highlight the point, it also links to a picture on Musk's Instagram of the company's mascot, a snail with a name and environs inspired by SpongeBob Squarepants."

http://www.popularmechanics.com/technology/infrastructure/ne...

danielharan··on All fossil-fuel vehicles will vanish in 8 years in oil and auto ‘death spiral’
"car in walking distance" is going to seem nonsensical very soon. These changes are predicated on autonomous vehicles.
danielharan··on All fossil-fuel vehicles will vanish in 8 years in oil and auto ‘death spiral’
Mostly scrap. If you're in the market for a vehicle, do you take a gas-powered car with high operational and maintenance cost, or do you buy one with low costs?

Most people won't even buy, as it's cheaper and faster to rely on a self-driving vehicle that picks you up like a taxi would.

Existing cars are about as valuable in those scenarios as a horse and buggy.

danielharan··on All fossil-fuel vehicles will vanish in 8 years in oil and auto ‘death spiral’
There's a whole world out there outside of rural America. USA is #41 at 82.4% urbanization: https://en.wikipedia.org/wiki/Urbanization_by_country

Saying cars are going to be obsolete doesn't mean they'll all vanish overnight. Hell, some people still have horses around.

Still, those companies making ICE cars are fucked.

danielharan··on Show HN: Sorting Two Metric Tons of Lego
You can probably use your already sorted legos to re-create a training set with a new machine.
danielharan··on NHTSA’s full investigation into Tesla’s Autopilot shows 40% crash rate reduction
So 3000X the difference of 0.5, or 1500 crashes avoided.

:O

danielharan··on Study: carpooling apps could reduce traffic 3x in NYC
Any city building high-throughput transit corridors should take this into account. I think carpooling and on-demand, self-driven vehicles can help.

Some adjustments might include putting stations further away from each other, so total travel time decreases. If your last mile is solved by carpooling, you can go an extra block to get on a train / subway / etc.

Some transit agencies might even consider including these vehicles as part of their overall offering, especially if that replaces "park and ride". That land near stations is more valuable when developed with something other than a parking lot.

danielharan··on Norway reportedly agrees on banning new sales of gas-powered cars by 2025
People will figure it out. Parking lot owners will have an incentive to provide charging stations; leave your car keys to the attendant and they'll get to it over the day.

More meta: our inability to see solutions to minor roadblocks never mean something won't happen. It's similarly amazing to me how so many commenters here don't think insurance for self-driving cars is solvable in the US - while they're already being tested in several other countries.

danielharan··on Scientist Engineers Bacterium That Inhales CO2, Produces Energy
You're comparing completely different things.

It depends first on what is done with the ~1kg of CO2 captured.

If humans get their carbon from sources that are removed from the air, we don't have a net addition.

danielharan··on The complications of nutrition science
Fish oils are NOT trans fats. Omega 3 is a polyunsaturated fat, while trans fats are those we artificially saturated.
danielharan··on The complications of nutrition science
For 3, there's evidence that very low carb diets will improve insulin response. Over time it seems plausible that your body will respond differently to food if your hormones stay out of balance, storing more of it as fat.

How we store energy also depends on what exercise we get and its timing. Carb back-loading supposedly doesn't have the same insulin response because the energy is used to replace sugar (can't remember exact name, too lazy to look it up, sorry) in muscles instead of storing it as fat.

The OP also links to a study that looked at several factors including microbiome. Genetically identical twins could have different response to the same foods. I'm pretty sure our microbiomes are very different than those of our ancestors, so we probably won't get the same results.

danielharan··on Startup Failure by Industry
+1

If you sell your company after 3 years or get a job that's better than consulting, the business entity is no longer operating - though that may not be a "failure" for the founders and employees.

Meanwhile there are zombies that have been draining founders and burning out employees, yet are counted as a success because the business is a going concern.

danielharan··on The first person to hack the iPhone is building a self-driving car
Also: "Hotz hadn’t programmed any of these behaviors into the vehicle. He can’t really explain all the reasons it does what it does."

Good luck to him understanding how to fix corner cases: he's built a black box.

danielharan··on Show HN: Apifier – hosted web crawler for developers
I'm hoping this could save me some work.

A few questions, if founders are still around:

-Can you cache pages / download entire sites? -If caching, can you detect changes on a given schedule, trigger the extraction "pageFunction" and save versioned data?

-How do you handle errors?

-Will you handle database extractions and other sites that require multiple levels of what you have as pseudo-URLs?

danielharan··on “This mistake will become the thing you are best known for”
If all the pro-life crowd took that stance, it wouldn't take long until the death penalty was abolished in the USA.
danielharan··on “This mistake will become the thing you are best known for”
330 exonerations and counting, so #3 isn't always a yes - and there's a likely no on #1 and #2. For #4 and #5 I usually say no - mainly because we can't get 1-3 right.

http://www.innocenceproject.org/

danielharan··on “This mistake will become the thing you are best known for”
http://www.innocenceproject.org/
danielharan··on For San Francisco Cab Drivers, Once-Treasured Medallions Now a Burden
There are 1800 medallions for all of SF ( https://www.sfmta.com/services/taxi-industry/medallions/meda... )

At 250k, buying them back would cost $450 million.

The city could tax the new cabbies on a percentage of each fare, while buying back medallions over the next few years.

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