> Make 20 year experiments before rolling out any change at scale?
Basically. It wouldn't require a 20 year experiment probably. Looking at whole words vs phonics as an example, you'd get a handful of schools to participate and they'd try phonics in one class and whole word in the other. By the time the kids were in 2nd grade the fact that whole word learning wasn't working and that a higher rate of kids needed remedial lessons to catch up would have been obvious. And if it had worked really well you'd expect to see that performance improvement in reading by 2nd grade too!
So the experiment would take 3 years. Though then you'd probably want a larger scale experiment. I'd think if things were going well once kindergarten finished you could probably start involving more schools in the experimwnt the next year. So like 3-6 years altogether.
We have been successfully educating kids for a long time; if we want to mix things up with some fancy new pedagogy we should absolutely be studying if it actually works before rolling it out at scale!
This seems like a corruption of "you can't have your cake and eat it too." I'm somewhat confused as you can definitely both bake a pie and eat it too. Or are you trying to make some kind of point that I'm missing?
Have you looked at Bluetooth LE Long Range? I believe more recent phones have it and it claims communication of up to 1km. In practice less in the woods I'm sure. Still a dramatic win over standard Bluetooth though.
BLE Coded PHY is on my radar. The theoretical range boost is huge, something like 4x over standard in ideal conditions. The challenge right now is that flutter_blue_plus (the BLE library I'm using) has limited support for negotiating Coded PHY, and both devices need to support it. But phone hardware has been shipping with it since around 2020 so the install base is there. Definitely something I want to add, probably as an automatic upgrade when both peers support it.
Yeah iOS supports BLE Coded PHY since the iPhone 12 / iOS 14. The tricky part is negotiating it at the library level. flutter_blue_plus doesn't fully expose Coded PHY yet so I'd need to handle it through platform channels on both sides. It's on my list though, the range improvement would be significant!
Oh, I thought that support was only present in some iOS 13 beta and then disappeared again? (At the OS/driver level; I’m pretty sure the hardware supports it.)
You're right, I was wrong about iOS 17 auto-negotiating Coded PHY. After digging deeper, Apple did support it briefly in iOS 13.4 betas but pulled it in iOS 14 and it hasn't returned. CoreBluetooth still doesn't expose PHY selection at all. The iPhone hardware supports it but the OS won't use it. So BLE Long Range is going to be Android-only for now. I've updated the roadmap to reflect that.
... Your examples seem to undercut your point if I'm understanding what you're trying to say.
In your first example the "cost" in the form of traffic etc. was reduced so more people "buy" in the sense that they go on the road until you reach a new "cost" equilibrium. In practice that equilibrium is quite close to the original cost so it doesn't fix the issue traffic. But if that same number of people had driven before the high way expansion traffic would have been way worse; the cost would have been too high so they previously opted not to drive.
In your second example by increasing the supply of money the money ends up costing less; it becomes worthless due to inflation.
When there's more of a thing it cost less.
To be fair, building more housing can be like highway example. If there's tons of pent up demand of people looking to move somewhere increasing supply dramatically can fail to move the needle on cost because there's many marginal buyers who all have basically the same price. If you've got a million people who want to move somewhere and are all willing to pay up to 500k for a house the price of a house won't fall under 500k until you've built at least a million more homes.
> ... Your examples seem to undercut your point if I'm understanding what you're trying to say.
That perhaps you shouldn't assume that kindergarten-level theories always correctly describe complex markets?
> In your first example the "cost" in the form of traffic etc. was reduced so more people "buy" in the sense that they go on the road until you reach a new "cost" equilibrium.
So go on, do continue this line of thinking. You built more houses.... then what?
Yeah that’s induced demand and it’s a good thing for the economy.
The rents are supposed to reduce only temporarily. But the goal is to not reduce is permanently. The goal is to increase land utility. Building houses helps with that cause.
> Yeah that’s induced demand and it’s a good thing for the economy.
No, it's not good. It leads to nothing but urban decay.
That's how you get Tokyo with a crazy price bubble, while beautiful traditional houses decay into dust just 3-4 hours away.
> The rents are supposed to reduce only temporarily.
Except that they don't even decrease. If your population is growing, so is your rent. And it doesn't matter how much you build (for large enough cities).
Again, this is simple observable truth.
> The goal is to increase land utility. Building houses helps with that cause.
Yeah. The goal is social engineering to force people into shoebox-sized apartments, to be ruled by their benevolent masters.
That's also why we're getting a global pushback against it.
> No, it's not good. It leads to nothing but urban decay.
This is subjective and loaded. I don't see any concrete point you are making.
>Except that they don't even decrease. If your population is growing, so is your rent. And it doesn't matter how much you build (for large enough cities).
They did temporarily in Austin - 19% after accounting for inflation.
Overall, making a city like NYC is preferred for any country. Even if the prices are really high, it reflects the economic activity of that city. Why would a house cost ~$800k if the person living there won't make multiples of it with their wages?
> This is subjective and loaded. I don't see any concrete point you are making.
Forced (by economy) in-migration into cities is a net negative for the country with stable or shrinking populations. It leads to objectively worse quality of life for people (less living area per person and more financial stress).
> Overall, making a city like NYC is preferred for any country.
Nope. Making a city like NYC is a recipe for disaster. Europe and the US are living through it right now. How do you think we got that kind of polarization?
When it's a zero-sum (since population is stable/declining) game, the losers are not going to take it lightly. They become an easy target for all kinds of populists.
> That's how you get Tokyo with a crazy price bubble
Are you really making an argument that rents in a place like Tokyo are not supported by real value creation? Are we supposed to all live in "beautiful, traditional" heritage houses? Those houses are often a luxury, and favored by the wealthy who can live with the resulting inconveniences. They're not a sustainable solution for the masses.
Not really, it used to be the case that a full third of Americans moved every year. Obviously life is more complicated than econ 101, but it's also obvious that a current undersupply of housing is one of, if not the primary, drivers of home pricing. Admittedly other factors like the governments interference in the home loan space have also had large effects on the market over the last century.
They're comparing Saudi Arabia to a drug dealer; I don't think they're ascribing any moral virtue to the Saudi regime. They just believe the Saudis are acting more intelligently.
They mean in the sense of sum, product, difference, and quotient. The comment they were replying to said KW/h (a quotient), but the term is KWh which is a product.
A fun fact, SCOTUS as a term predates POTUS by over a decade. So actually -OTUS was extended to POTUS from SCOTUS, not the other way around. Though both are well over 100 years old at this point. I think POTUS is probably the more well used term today, but in any legal context SCOTUS gets used more or less constantly.
I'd point out that at least in aerobic exercies (ie running and biking) its generally recommended that you shouldn't be pushing too hard for most of your workouts. If you're going out four days a week it's only on one or two of them that you're generally supposed to push yourself. The others should be at an easier pace. Which I tend to find more enjoyable.
There's also something to be said for seasons of maintaining a level of fitness rather than pushing for the next level!
I believe it's just a matter of intuitively useful units. There's simply too many seconds in a day for people to have an immediate grasp on the quantity. If you're using a space heater or thinking about how much power your fridge uses kilowatt hours is an easy unit to intuit. If you know you have a battery backup with 5 kilowatt hours of capacity and your fridge averages 500 watts then you've got 10 hours. If you convert it all to watt seconds the mental math is harder. And realistically in day to day life most of what we're measuring for sake of our power bill, etc. is stuff that's operating on a timetable of hours or days.
"litres-of-fuel per km-driven" (Volume/Distance) is still fully reductible to an area: litres is still a volume (1 cubic decimeter) and km is still a distance (1x10⁴ dm) Maybe you meant that the other way around? Distance/Volume (as in Miles/gallon) is an Area⁻¹ (Distance⁻²), which is more difficult to imagine in space.
Now, Kg is a measure of mass (or weight, depending on who you are asking), which throws density into the equation, which is proportional to the temperature, which will vary according to where and when the driving takes place. But since the time and place, and hence the temperature is (allegedly) defined when the fuel consumption was tested, the density is a constant, and as such you can leave it out from the relation.
If you car was fueled by a fixed pipe which it travelled along, consuming all the fuel in the sections of the pipe that it moved past but no more, what would the cross section of the pipe be?
> Now, Kg is a measure of mass (or weight, depending on who you are asking), which throws density into the equation, [...]
It's the other way round: chemically how much energy you get from burning your fuel is almost completely a function of mass, not of volume. (And in fact, you aren't burning liquid fuel either, in many engines the fuel gets vaporised before you burn it, thus expanding greatly in volume but keeping the same mass.)
> [...] which throws density into the equation, which is proportional to the temperature [...]
For an ideal gas, sure. But not for liquid fuels.
> "litres-of-fuel per km-driven" (Volume/Distance) is still fully reductible to an area: litres is still a volume (1 cubic decimeter) and km is still a distance (1x10⁴ dm) Maybe you meant that the other way around? Distance/Volume (as in Miles/gallon) is an Area⁻¹ (Distance⁻²), which is more difficult to imagine in space.
I don't think that the reciprocal is a problem. No, what I mean is that you can't cancel fuel with driving. Litres-of-fuel is a different unit than distance-driven ^ 3. Similar to how torque and energy are different physical quantities that you can't cancel willy-nilly, despite their units looking similar.
You might find a physical interpretation for an adventurous cancelling, and that's fine. But that's because you are looking behind the raw unadorned units at the physics, and basing your decision on that.
Units are a very stripped down look at physics. So units working out are necessary for cancelling to make sense, but not sufficient.
Also the UK gallon is different from the US gallon. And the same applies to all the other non-metric fluid measurements such as pints and fluid ounces. Historically the UK gallon was used throughout the former British Empire (Australia, Canada, India, Ireland, Malaysia, New Zealand, South Africa, etc). By contrast, almost nobody ever officially used the US gallon except for the US (and a small handful of highly US-influenced countries such as Liberia).
I use the conversion factor so often that I know it by heart: 1 day = 86400 seconds. I punch that 5-digit integer into a calculator, not an approximation like 8.5e5 (which is the same length, haha).
I'm not sure if I would call it sarcasm, but it's a reference to a popular computer science joke format.
The first time I saw it:
>There are 10 kinds of people in the world, those who understand binary and those who don't.
The joke is that 10 is how you express 2 in base 2.
I think there is another layer to the joke, though; often in mathematics, computer science, algorithms, and software engineering, things get divided into sets, sets get broken down into two sets according to whether some property about the elements is true or false, and this joke echoes that.
Basically. It wouldn't require a 20 year experiment probably. Looking at whole words vs phonics as an example, you'd get a handful of schools to participate and they'd try phonics in one class and whole word in the other. By the time the kids were in 2nd grade the fact that whole word learning wasn't working and that a higher rate of kids needed remedial lessons to catch up would have been obvious. And if it had worked really well you'd expect to see that performance improvement in reading by 2nd grade too!
So the experiment would take 3 years. Though then you'd probably want a larger scale experiment. I'd think if things were going well once kindergarten finished you could probably start involving more schools in the experimwnt the next year. So like 3-6 years altogether.
We have been successfully educating kids for a long time; if we want to mix things up with some fancy new pedagogy we should absolutely be studying if it actually works before rolling it out at scale!
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