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bmcusick

989 karma · joined June 2, 2016

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bmcusick··on Are diesel’s days numbered? A view from a trip to BYD’s electric bus factory
Exactly right.
bmcusick··on Are diesel’s days numbered? A view from a trip to BYD’s electric bus factory
And airlines are niche compared to mass market cars too, but they're still a good business!

One thing I think most people don't appreciate is that the switch to self-driving cars will transform America into a mostly-transit society. Once you don't need a car to live from day to day, you sell it. Then you take a self-driving Lyft from your house to the bus depot, train station, or airport.

The market for self-driving busses between cities will grow alongside the market for self-driving cars within cities.

bmcusick··on Are diesel’s days numbered? A view from a trip to BYD’s electric bus factory
I like the discussion at the end about the difficulties on delivering the busses long distance, and the lack of chargers big enough to recharge them. If the Tesla Semi actually launches at some point, perhaps that will change and we will get city-to-city electric busses too. Battery ranges should improve to the point where that becomes practical over the next few years too.

What a great market that would be for Waymo. Predictable routes of mostly highway driving would be right up their alley.

bmcusick··on Children born to spies in Canada should not be handed citizenship, says Ottawa
What is a spy?

They're not a legal immigrant, because they lied on their immigration papers, making their immigration invalid.

If they're an illegal immigrant, their children would be granted citizenship.

If they're a diplomat, their children would not be granted citizenship. The child of the Russian Ambassador does not become a Canadian citizen even if born and raised in Toronto.

I think the government's argument that they're more like a diplomat (an agent of a foreign country) than an undocumented resident (e.g., someone who's entered the country of their own volition for work) is pretty sound.

bmcusick··on Hong Kong government granted US consulate a rare 999-year lease in the 1990s
My god. It's an actual, blatant violation of the Rule Against Perpetuities. [0] And here I thought I'd never use this knowledge outside of a Property Law exam.

0. https://en.wikipedia.org/wiki/Rule_against_perpetuities

bmcusick··on Colonising Mars is unlikely and a bad idea
The idea that humans shouldn’t expand into the cosmos for fear of displacing some xenoplanktons is nuts. I’m not anti-xenoplankton, but I’m very pro-human. We will inherit the stars.
bmcusick··on Google’s Anti-Pentagon Decision Will Kill More People
You know what would kill fewer people? Not bombing Yemen.
bmcusick··on Rental Attacks Mean Blockchains Must Evolve or Die
This article has it completely backwards. As is often the case, (just as Paul Krugman gets basic tech facts wrong) tech people often don't understand economics.

This has ALWAYS been the problem with "ASIC resistant" coins. "ASIC Resistant" just means that you can rent an AWS instance to attack the coin because any generic CPU or GPU will work.

Bitcoin isn't safe just because it's big. It's safe because Bitcoin mining hardware has no purpose other than to mine Bitcoin. Which means the economics are such that Bitcoin mining is only profitable on the fully amortized lifetime cost of the miner, not on the marginal rental cost.

(That's because competition between miners drives the difficulty so high that marginal revenues fall until they equal long-term marginal costs, which are (land rent + labor + fully amortized hardware + electricity))

ASIC driven Proof-of-Work is fine as long as your coin's POW is unique. Only by forcing miners to make a 3-5 year investment in mining hardware can you align the long term incentives of miners and end-users.

bmcusick··on Waymo’s autonomous vehicles are driving 25,000 miles every day
There's more to safety statistics than just the mortality rate. We should be able to look at frequency and severity of non-fatal accidents too. Those happen a lot more often.

For example, accidents that occur at 35 MPH or less are much less likely to result in a fatality or major injury, due to the amount of kinetic energy that a human body can safely dissipate. So if Google cars have even slightly better braking or speed control, you're going to see an improvement. Looking at the average speed at which accidents occur would be useful information.

bmcusick··on The European Commission versus Android
More to the point, the EU didn't say "Google can't monetize Android". It just said that this tying arrangement between Google Search and Android is too anti-competitive.

Android could find other, more transparent and competitive, revenue models.

bmcusick··on Google warns Android might not remain free because of EU decision
Yeah, that's why I'm favor of this decision. I think it's reasonable for regulators to have an anti-tying bias and make companies prove that the tying is somehow necessary. Because the alternative to tying (as you say) is a more open, competitive, and transparent "cash for stuff" market.
bmcusick··on Google warns Android might not remain free because of EU decision
That's basically what the EU is demanding. The EU has handed down what is an anti-tying decision. "You can't tie Android to Google Search, because that prevents competition in Search."

Okay then, but Google Search is what paid for Android development, so if you can't tie them together, Android needs to seek other sources of funding. The most obvious one is some sort of licensing fee.

(It could also possibly fund itself from search revenue (like Firefox) and App Store fees, although the second one could be broken up by the EU too on anti-tying grounds)

It's no different from when Windows was prevented from tying Windows to Internet Explorer. It opened competition in browsers (and we now have Firefox, Chrome, Opera, Brave, etc.), but it also forced browsers to find independent business models.

bmcusick··on Employers will do almost anything to find workers except pay them more
Everyone does. Hell, I do too. But it's not realistic to expect this music to keep playing. The ratio of workers to retirees keeps getting worse, from 10:1 in the 1950s to 3:1 today, and falling.

The economy can grow over time, but on any given day it's a fixed pie, and it has to be divided among workers (who are doing the labor now) and retirees (who accumulated the capital in previous decades that today's labor uses to magnify their productivity).

Everyone is feeling squeezed as individuals because of falling incomes, but the real culprit is a falling ratio of income-makers (labor) to income-takers (capital, whether retired individuals or just wealthy).

This cannot last. The ratio of labor income to capital income will eventually be restored (hopefully in a peaceful manner, but we can't rule out alternatives). The reasonable fix will be raising retirement ages, but good luck getting a sufficient raise there to restore a 10:1 ratio.

bmcusick··on Trial wipes out over 80% of Australian disease-spreading mosquito
> In an international partnership between CSIRO, Verily and James Cook University, scientists used specialised technology to release millions of sterilised male Aedes aegypti mosquitoes

This is so stupid. A population will recover from this in a single generation, because the second you stop releasing sterile males, the remaining males (no matter how few) can repopulate the species.

If you want to make a species of mosquitoes extinct (and I'm in favor of this, they serve no irreplaceable environmental purposes), the more effective method would be releasing males that only have male offspring.

bmcusick··on ARM: “RISC-V Architecture: Understand the Facts”
Oh, I'm sure that there will be hobbyists who do this. Just like there are people who run Arch on their home PC, or automate their house with Arduinos. The joke about "The Year of the Linux Desktop" is predicting mass consumer adoption. That doesn't seem too likely, unless someone like Apple or Google decides to move their stack over to silicon they can design and control in-house without need for ARM's long term support.
bmcusick··on ARM: “RISC-V Architecture: Understand the Facts”
Looking forward to "The Year of the RISC-V Desktop" articles.

That's a joke, but I think Windows vs. Linux is the right reference frame here, assuming that RISC-V proves out. Those who want to roll their own and control their own destiny may go with RISC-V, while those who want a packaged solution will go ARM. And ARM will have to get better to compete.

Western Digital has gone with RISC-V for a controller, because Western Digital is the kind of company that wants to commoditize its inputs so it can sell a packaged solution to its customers as cheaply as possible. I can also see Amazon or Google finding uses for RISC-V in their data centers.

Phones ... I'm not so sure. Maybe Apple could go that way, as they're vertically integrated and already make their Ax chips in house. But the Android OEMs wouldn't unless Google leads the way.

bmcusick··on Ask HN: What talks or videos do you suggest to watch on a long flight?
Snakes on a Plane
bmcusick··on What's the Minimum Number of People for a Generational Ship to Proxima Centauri?
Interesting discussion, but not very forward-thinking on the biology side. As a simple critique, they claim that 32 crew would result in too much inbreeding, but what about IVF? There's no reason all the children have to be the full children of the crew. They could put sperm and egg cells from thousands of donors into deep freeze before leaving.

There's also no discussion of life extension, which seems more near term than interstellar starcraft.

Anyway, we will probably have good data on the optimal size of asteroid colonies long before interstellar colonization is a live issue.

bmcusick··on Why Proof-of-work isn’t suitable for small cryptocurrencies
As opposed to what? Proof of Stake? Not even Ethereum can get that to work securely.

I'm not familiar with all of those small coins, but the problem with Bitcoin Gold is that it uses the same Proof of Work that several other coins use, so a miner can buy ASICs and then switch between coins.

So they can mine honestly on Coin 1 for a while, then switch to Coin 2 and do some double-spend attacks, then when Coin 2's price collapses, they switch back to Coin 1 or move on to Coin 3. The miner has no long term incentive to support the value proposition of any one coin, and they can attack coins that use the same PoW algorithm as their "main" coin at will.

The same problem applies for coins that use ASIC-resistant PoW's, only more so. You can just rent an AWS cluster for an hour to run your attack, then ghost with the profits.

What coin developers need to do is design their proof of work and mining activity to ensure that miners have the same (or close-enough) long term incentives as coin holders.

bmcusick··on Edmunds Tesla Model 3 Long-Term Road Test Update for April
Maybe I’ll get the Model 3.11 for Workgroups.
bmcusick··on If you’re rich, you’re more lucky than smart. And there’s math to prove it
And if you’re smart, that’s luck too. I didn’t earn my IQ.
bmcusick··on Facebook reportedly plans to launch its own cryptocurrency
I'm sure that FB will respect user privacy and won't mine your economic data for advertising purposes.
bmcusick··on Exeter team develops low-cost photoelectrode for water-splitting using sunlight
Here's the bigger issue than efficiency, IMO:

> during the first 6 hour cycle where the photoelectrode generated 0.18 μmol/cm2 of hydrogen

And then...

>After a further 6 hours illumination, the LaFeO3 thin film generated 0.08 μmol/cm2 of hydrogen (Figure S8). This provided additional evidence that the film is re-useable, although the amount of hydrogen produced is almost halved

From 18 to 8 units/area in just six hours is not a good decay curve.

bmcusick··on If Ethereum Isn’t a Security Then Nothing Is
> The investors are relying on the efforts of others for their profits.

Are investors in gold relying on the efforts of others for their profits? After all, there are people out there making gold exchanges, developing gold mines, marketing gold jewelry, minting coins and bars for vaults, etc. etc. There's your efforts of third parties which drives up value of gold.

Of course the answer is "maybe" until the law is written or the case decided, but let's not lose sight of the fact that the law already has categories that are a closer fit.

Who's the third party in a decentralized ecosystem? Everyone who's ever contributed a line of code? Everyone who has developed a DAPP that feeds the demand side of the market?

Where's the common enterprise that's being invested in?

bmcusick··on If Ethereum Isn’t a Security Then Nothing Is
Coin Center isn't an unbiased source, but they do have the advantage of actually being lawyers: https://coincenter.org/entry/no-ether-is-not-a-security

Full disclosure: I am also a lawyer, and I work in markets trading at a bank. That's not an endorsement of Coin Center's conclusions, but it's my informed opinion their arguments are sounder than the idle speculation of the author.

If there's anything that Ether is similar to, it's a currencies (my area), collectibles, or commodities (adjacent to my area). There's no underlying business that's being invested in or paying dividends to you. It's 100% a speculation on appreciation.

I'll give you an example. Say Vitalik owned a oil exploration company, and he also owned oil rights to a big patch of oil in Texas somewhere. Instead of selling shares in his company to raise money, he pre-sells the oil. "You give me money for the oil, and I'll go dig it up for you."

You don't own shares in his company. You own oil. Oil isn't a security.

bmcusick··on Buffett bashes Bitcoin as nonproductive, thriving on mystique
Bingo. He's also a value investor. He understands cash flows. Bitcoin produces no cash flow.

Also, Buffet is the insider's insider. Banks work for him. He has exactly a 0.00000% chance of having his accounts frozen. The US Congress would hesitate to pick fights with his companies. When you have those kind of connections and power, you're not well placed to understand the benefits decentralized sources of authority provides.

What Buffet is missing is that bitcoin is an alternative to cash, and when lightning networks and side chains are widely deployed it will be very, very competitive with cash on most axes. Eventually (if hyperbitcoinization actually happens) even the variability will be less than any one national currency, since global demand and stabilizers will buffer it against any localized shock.

bmcusick··on A "major breakthrough" in diesel technology significantly reduces emissions
Tesla initially had a battery-swap feature at its earliest Supercharger stations, but no one used it. For consumers, the recharge time was good enough even then.

Long haul trucks will probably use it.

bmcusick··on A "major breakthrough" in diesel technology significantly reduces emissions
/Looks at wind power 1/5th the cost of coal, and still falling

/Looks at batteries 1/5th the cost of what they were 10 years ago, and still falling. Just another 1/2 reduction to being cheaper than an ICE engine

Yeah.... even if this made diesel cleaner than baby smiles I don't think this is going to save diesel.

bmcusick··on Designing a 'Young Lady’s Illustrated Primer' from Diamond Age
For mature learners, a prototype they might find useful would be a research assistant. The AI could work at making sure it understood queries better over time, then get better at finding answers, then get better at summarizing why its findings are useful, and finally work on explaining/teaching what it found.
bmcusick··on Gwynne Shotwell: SpaceX's Plan to Fly You Across the Globe in 30 Minutes [video]
The main thing I'm thinking of is noise pollution. You think living near an airport is loud? I cannot even imagine what living near a BFR spaceport would be like. For coastal cities maybe it would be worth it to build a landing pad on an ocean platform some miles out to sea, but what about for cities like Atlanta or Beijing? There's nowhere around them to build that isn't already a suburb.
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