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Comment We need real examples (Score 1) 295

There should be some concrete examples published on what sort of taxes the ultra-rich pay or don't pay. Perhaps start that requiring that billionaires should have their tax-returns published for all to see, perhaps anonymously and redacted, but certainly it should answer the question of how much tax they pay, their total capital gains, distributions, exemptions, etc. Otherwise people will be voting on this initiative based on anecdotes, like so many comments here are.

Comment Re:Whitelisting? That trick never works (Score 4, Insightful) 124

Anti-freedom ?

If you create your own website, the phone won't be able to display it. That's why it is anti-freedom. A browser is an operating system on its own that runs on many devices, including iphones and most Android phones (except this one). Blocking browsers means that the phone can run only Android apps, not web apps.

If you don't like it, don't buy it there are a ton of alternative

If you like it, buy it. But make an informed choice.

Be a great phone to give kids though, you know that parental responsibility thing where they can keep kids away from the BS.

Assuming you don't want your kid to access any websites, including their school website, your family website (if you have one) a weather station website, government websites, or their own websites, if you kids have learned to build one.

Comment Re:I cannot understand... (Score 1) 75

According to the specifications on that website, the planes have maximum power of 750 HP = 500 Kw. If the plane flies for half an hour at this maximum power, it will use 250Kwh. If the batteries have energy density 250Wh/Kg, it will need 1000 Kg of batteries (1200 Kg, if the batteries are discharged to 20%). These planes have payload 500Kg. 1000 Kg of batteries is 2X the payload, which does not seem excessive.

For comparison, a Boeing 787 has fuel capacity of 100 000 Kg, which is 100 times the above battery size.

Comment Re:Let's eat Grandma, shoots, and leaves. (Score 1) 168

It would be quite a challenge to build a car with a 1000 Km long rigid battery.

One solution would be to mount the battery vertically. It would cause problems with aviation and satellites, and would require abolishing all underpasses and removing overhead cables. It should have a ligthning port a few Km from the ground, for free fast charging during thunderstorms. Balancing this battery so it doesn't tip over would be tricky, but if Segways can be balanced, so should this. It would have to be a cutting edge battery with no wind resistance.

The geometrical problems with mounting such a battery horizontally are formidable. The battery should be curved to the curvature of the earth, otherwise the ends would have a 20 Km altitude difference from the middle. City blocks would need to be at least 1000 Km long, and would fit only one car on each side for street parking. A car could avoid making U-turns by having its cabin rotate 180 degrees, instead of turning the whole car. It could also slide on rails along the length of battery, so as to avoid moving the whole battery for short trips down the street (less than 1000 Km). If we continue thinking along these lines, out of the box, we could embed the batteries in the streets, and have the cars move around freely on top, getting power from the batteries on the fly.

If the batteries are not rigid, then we have a lot of flexibility. A 1000 Km flexible thin battery could be coiled up to fit anywhere.

Comment Go went from #7 to just above Rust (Score 2) 184

I'm more interested in how Go went from #7 in July to #15 in April, just above Rust, in the TIOBE index. Go is much easier than Rust to learn and use. Comparing Rust and Go in the charts, the Rust ratings have mostly been going up since 2017, while Go seems to have stayed flat, with the exception of two spikes.

Comment Re:Science forgotten (Score 4, Informative) 69

The produced oxygen and other materials can be stored, therefore there is no need to store the energy in batteries.

There is also a solution to providing continuous solar power without batteries, if the base is near a pole. Put solar panels in a circle around the pole, so that at any given time, some of the panels are in sunshine. I read a paper abstract about this that said the panels should be at 87 degrees latitude (about 100 miles from the pole). I don't know why. It seems feasible.

Comment Re:Wha't in it for me? (Score 1) 194

I meant searching for the UPC code in the store's own inventory system, not in the general internet. There are other ways of doing it than downloading a separate app for each store. For starters, it could easily be done by a web search on the store's webpage. I would scan the code on any QR code scanning app, and then paste the UPC on a search field in a webpage that I could easily find in the store. It would be easier to implement than dedicated hardware kiosks.

Comment Guinness Book of Records? (Score 1) 40

I'm surprised to find out that the Guinness Book of Records serves as a registry of scientific achievements. Here's the entry and a few other scientific records:
Smallest QR Code
Smallest Transistor
Lightest Black Hole
Brightest Star viewed from Earth

Ironically, the name of the university that made the feat, TU Wien, is not mentioned in the slashdot summary, but the Gunness Book of Records is.

Comment Re: a corporation gave some money... (Score 1) 31

You''ve added the word 'more' here and that wasn't in the original statement.

Rust depends on external libraries more than other languages do, because the Rust standard library does not include "core concerns such as async support, HTTP handling, and cryptography", as per the article. Languages like Java, and Go have large standard libraries that do all these things. Rust does not. I believe Rust has a philosophy of not wanting to commit to specific libraries, but instead let programmers pick the best libraries.

Comment Wha't in it for me? (Score 1) 194

When I go to a store, I would like to be able to scan product UPC codes and see the current price for those products. This is also useful if the price tag is missing or if I can't read it, because it is too small, or too far (at the bottom shelf just above the floor), or because my eyesight is not sharp enough. Is this a lot to ask for?

I want to be able to do this this without installing the store's app, but with a 3rd party app (or my own). I also want to be able to scan the receipt and get an itemized price-list of what I bought.

Digital price tags are a convenience for the store. What I'm asking is a similar convenience for the customer.

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