Maybe you’re not dreaming big enough on what makes ideal conditions. The fraudulent Nikola company managed to film a semi “driving” a few km without a powertrain, by just letting it roll downhill. I bet there’s a place that has a high enough altitude and smooth enough roads for a long downhill descent where 600km on a 300km battery is possible.
Makes me wonder about the wheel’s rotational inertia, too. In theory, a hubless wheel could be lower mass overall without the need for a center axle/hub and spokes connecting the outside to the center. But that’s all weight saved in the center of the wheel with lower effect on overall rotational inertia. Visually, the picture that makes the thumbnail in this post shows that the brake disc has to be further from the center of the wheel, which I imagine adds a lot more weight (more material necessary for the overall brake disc being a larger circle) and a lot more rotational inertia (further from the center).
Maybe the whole design itself can save weight in certain places that make up for the weight added in other places. But I just have a ton of questions, and am overall pretty skeptical of the long term potential of this design.
Looks cool, though, I guess.
The hubless wheel is on their current models. It’s basically their signature differentiator.
There’s reason to be skeptical of the company and its claims as a whole, but at least that particular feature has shipped and has been test driven by reviewers:
https://thepack.news/11000-km-in-2-months-marc-travels-rides-the-verge-ts-across-europe/
My “We’re totally different from Enron” accounting report has a lot of investors asking questions answered by the report.
Or maybe use excess power to electrolyze water for fuel cell use later?
Hydrogen storage presents a lot of challenges, because it tends to leak at normal temperatures found on Earth. So we either tolerate a lot of loss during storage, or we use lots of energy chilling it to a temperature where it won’t easily escape.
Yeah, seems like someone could pass the test by only knowing pokemon, which isn’t what we’d want in testing people on their drug knowledge.
Actually, I suppose a name being used for a drug or a Pokémon precludes it from being used for the other, so it is a very shared issue, lol.
Theoretically, unrelated trademarks can have the exact same name in different fields, owned by completely different owners, but that generally only applies to trademarks that are regular words that are already in use: Apple Computer versus Apple Music (which the Beatles owned and ended up selling to Apple Computer), Monster Energy Drink versus Monster Cable versus Monster Jobs, Dove soap versus Dove chocolate, etc.
Still, the law looks to likelihood of customer confusion, and maybe it would be too confusing to have a Pokemon named Ozempic.
Yeah, circumcision is near universal in Muslim-majority countries:
Allah = God (Islamic)
Are you under the impression that Muslims don’t circumcize? In many Muslim societies, they make sure the boys are old enough to remember the mutilation, with circumcision around the age of 7.
The average cost of a hospital stay in a U.S. hospital is about $3,000 per day, but it varies significantly by location. So long stays like yours might cost between $250,000 and $500,000.
If your insurance covers it (and about 92% of Americans have health insurance), you’d be looking at your annual out of pocket max, which the law caps at $18,000 for family plans or $9,000 for individual plans, but which most people on employer sponsored plans (around 60% of Americans) have out of pocket maxes around $4,000 to $5,000. Source
So for most Americans, your hospital stay would’ve probably cost the individual patient about $5,000. Insurance would’ve paid another $350,000.
But for some Americans, they’d be looking at a $360,000 bill and then would just file bankruptcy, start over with close to a net worth of zero, at least for non-exempt assets (people generally get to keep their homes, cars, and retirement accounts in bankruptcy so it won’t actually be starting from zero if you’re well into a middle age in the middle class).
Or worse, the hospital would realize they’re not getting paid, and then would find a reason to kick you out as soon as you’re stabilized. They have to keep you alive even when you can’t pay, but don’t have to treat you beyond that for free.
Let’s take home appliances. Imagine you are a person who knows how to diagnose and repair microwaves. You keep all the most common parts for the most common brands in your warehouse. You bring them with you based on the customer’s description of what is wrong, and you’re prepared to efficiently apply to correct repair as soon as you’re confident in your diagnosis.
Your typical job looks like this:
There, that’s 2.5 hours of your time to do a 15-minute task of installing a part. At the factory, a much less skilled person (who doesn’t need to know how to diagnose different models, or manage a business) could have installed 10 of those in the same amount of time. Maybe more, because they wouldn’t have had to remove an old one.
Most manufacturing is like this. Assembly is easy. Repair is hard. So repair of heavy/bulky/stationary things is always going to be very expensive. It may be more economical to tow the thing to a central place to be repaired, so that the worker doesn’t have to waste too much time driving from place to place.
Throw in the need to keep an inventory of dozens of parts for hundreds of models, and you’re also paying for the warehouse space and parts supply chain, and the interest on the money spent up front to stock up, maybe to be recovered later when a job actually needs that part.
The economics strongly favor assembling new stuff rather than repairing old stuff for anything even remotely simple. It isn’t until you’re up to the $5,000 range that it becomes pretty normal to prefer an all-day repair job over paying for a replacement.
For $500 devices, it’s gonna be pretty hard to economically repair things.
I’m only generally familiar with the big crime podcast/documentaries that spilled into the mainstream about 10 years ago: first season of Serial, Making a Murderer. And both of those were highly critical of the police work and called convictions into question (and actually got the public attention on the wrongful convictions).
More recently, I’ve seen the HBO series on Karen Read, and it painted a picture of severe police misconduct that at worst tried to frame an innocent person, and at best botched the investigation to make a conviction of a guilty person difficult to impossible.
So yeah, crime documentaries often do show police misconduct and incompetence. At least the ones that hit my radar.
The boring answer: criminal investigative files generally aren’t released, so they’re compiled in a way that mingles information about victims with information about suspects and witnesses and others potentially involved in criminal activity, intentionally or unwittingly, directly or tangentially.
If you want to export a list of all names in the files, you’ll want to filter out victims for sure, and probably mere witnesses. You definitely don’t want to out informants and make them vulnerable to retaliation.
So most law enforcement agencies simply will keep everything secret. The idea of releasing names from the file was unusual, and it’s not surprising that Trump’s own people refused to follow through, especially when it’s highly likely that Trump was in that list of names.
No, LCOE is an aggregated sum of all the cash flows, with the proper discount rates applied based on when that cash flow happens, complete with the cost of borrowing (that is, interest) and the changes in prices (that is, inflation). The rates charged to the ratepayers (approved by state PUCs) are going to go up over time, with inflation, but the effect of that on the overall economics will also be blunted by the time value of money and the interest paid on the up-front costs in the meantime.
When you have to pay up front for the construction of a power plant, you have to pay interest on those borrowed funds for the entire life cycle, so that steadily increasing prices over time is part of the overall cost modeling.
My problem with nuclear is both the high cost and, somewhat counterintuitively, the very long life cycles to spread that high cost. The economics only make sense if the plant runs for 75 years, which represents an opportunity cost of displacing whatever might be available in 25 or 50 years.
A solar plant planned in 2025 might be online in 2027, and decommissioned in 2047, replaced with whatever technology/economics are available then. But a new nuclear reactor bakes in the costs for 80+ years, to be paid by ratepayers who haven’t been born yet.
So if in 2050 a 2030-constructed nuclear plant is still imposing costs of $66/MWh on ratepayers, to finance the interest and construction costs from 25 years earlier, will that be competitive with the state of solar/wind/batteries/hydrothermal at that time? Given the past trend lines, it seems economically foolish to lock in today’s prices for the next 80 years.
This paper lays out the cost projections that one could expect with the lessons learned from Vogtle Units 3 & 4, with the tax credits and government guarantees available as of 2024:
https://web.mit.edu/kshirvan/www/research/ANP201 TR CANES.pdf
Ok, current projections are still for the next two AP1000s at Vogtle to be something like $10 billion. That’s just not cost competitive with solar/wind. And it’s also not very realistic to assume that there won’t be cost overruns on the next one, either. Complex engineering projects tend to run over.
Also where did you see they did amortization of solar?
I’m just familiar with Lazard’s LCOE methodology. The linked paper talks about LCOE, so that’s just how that particular cost analysis works.
Vogtle added 2 AP1000 reactors for $35 billion. Future deployments might be cheaper, but there’s a long way to go before it can compete with pretty much any other type of power generation.
Little bit longer than 27 hours. He died after 27 hours, and the authorities never figured out a practical way to retrieve his remains, so he’s been there for 16 years and counting.