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pierredv : critique   11

The Problem With 5G | PCMag.com, John Dvorak, Aug 2018
"The technology might be the problem, but even worse for the companies behind it is the perception that 5G is already unsafe before they even get it on a single pole. "

"It's a bad bet because so little is known about the effects of millimeter waves (30GHz-300GHz). While these frequencies only permeate a small fraction of the human epidermis (the skin), the effect on the cornea, in particular, needs serious research."
5G  RF  health  critique 
october 2018 by pierredv
Is 5G a Spectrum-eating Monster that Destroys Competition? Fred Goldstein, June 2018
"But 5G isn’t, as the FCC members tweet, a race that the US has to somehow “win” against China, lest uncertain horrors result. The likely real purpose of 5G is less obvious than its technology. 5G is more like a cult, a sacrificial cult that is being designed to kill off what little competition is left in the telecom industry."

"Today the biggest carriers and their backers have a new sun god called 5G. But unlike the sun, we don't know who really needs it. It’s based on a supplier-driven model, not a demand pull, given that 4G LTE has been both a technical and market success, and continues to be enhanced."
opinion  5G  critique 
september 2018 by pierredv
mmWave 5G services to be limited and localised, EU study finds | PolicyTracker, June 2018
"The ‘Study on using millimetre waves bands for the deployment of the 5G ecosystem in the Union’, which was launched in December 2017 and is being carried out by IDATE and Plum, suggests that mm-waves will constitute less than 1% of the total 5G market in terms of subscriptions by 2025. "

"According to interim results presented at a workshop, only localised specific applications and very dense areas will initially benefit from mmWave spectrum."

"Frédéric Pujol, head of radio technologies & spectrum practice at IDATE DigiWorld, predicted that the development of fixed wireless access (FWA)–using millimetre wave frequencies to provide in-building service, will be relatively low within the Union"
PolicyTracker  5G  mmwave  hype  critique  IDATE  PlumConsulting 
june 2018 by pierredv
Blockchain is not only crappy technology but a bad vision for the future
So in summary, here’s what blockchain-the-technology is: “Let’s create a very long sequence of small files — each one containing a hash of the previous file, some new data, and the answer to a difficult math problem — and divide up some money every hour among anyone willing to certify and store those files for us on their computers.”

Now, here’s what blockchain-the-metaphor is: “What if everyone keeps their records in a tamper-proof repository not owned by anyone?”



People treat blockchain as a “futuristic integrity wand”—wave a blockchain at the problem, and suddenly your data will be valid. For almost anything people want to be valid, blockchain has been proposed as a solution. It’s true that tampering with data stored on a blockchain is hard, but it’s false that blockchain is a good way to create data that has integrity.



Blockchain systems are supposed to be more trustworthy, but in fact they are the least trustworthy systems in the world.
Medium  bitcoin  blockchain  trust  critique 
may 2018 by pierredv
Blockchain's Two-Flavored Appeal - John Levine, May 2018
Bitcoin and blockchains lash together an unusual distributed database with a libertarian economic model. People who understand databases realize that blockchains only work as long as there are incentives to keep a sufficient number of non-colluding miners active, preventing collusion is probably impossible, and that scaling blockchains up to handle an interesting transaction rate is very hard, but that no-government money is really interesting.

People who understand economics and particularly economic history understand why central banks manage their currencies, thin markets like the ones for cryptocurrencies are easy to corrupt, and a payment system needs a way to undo bogus payments, but that free permanent database ledger is really interesting.
CircleID  blockchain  bitcoin  critique 
may 2018 by pierredv
Naked Emperors At MWC Barcelona - Dave Burstein Feb 2018
"[Timotheus Höttges of Deutsche Telekom], the first MWC Emperor without Clothes, wants $10’s of billions in subsidies and other favors. To get them, he wildly exaggerates the cost of building 5G."

"But must the [Indian] government subsidize a $9B man [Sunil Mittal of Bharti] because his costs go up by 3% of the $25B market cap. Bharti is convincing analysts and reporters rich companies should be subsidized even if they don’t invest more."

"[Gavin] Patterson of BT has said it’s financially impossible to bring fiber to most English homes. I don't believe BT engineers are any less competent than those at Telefonica and Orange, which have already fibered most of France and Spain."

"Pai of the U.S. (and Democrat Rosenworcel) think mmWave 5G will offer 1 ms latency while Verizon and AT&T are building for 5 ms to 10 ms. I don’t believe any telco in the world has announced 1 ms. networks."

"[Steven] Mollenkopf was busy trying to get a higher price for Qualcomm’s soul. He claims 5G will add $11 trillion to the economy in 2035, but almost everything attributed to 5G in his IHS “study” can be achieved with 4G, including by Qualcomm's excellent new 4G chip. ... Qualcomm engineers are the best but his lobbyists are as trustworthy as Bill Clinton discussing Monica Lewinsky."

"[Andrus] Ansip and [Roberto] Viola of the EU are smart, hard-working and I believe honorable. They are either blinded by ideology or just don't understand telecom. ... They are badly mistaken that 5G requires 25-year spectrum licenses at a "bare minimum." Not one of the telco CEOs who make that claim has said they will build more."

"I'm sure there were dozens more than the six I noticed."
Dave-Burstein  5G  critique 
february 2018 by pierredv
Are you ready for 5G? | McKinsey & Company, Feb 2018
"Smart operators will consider seven no-regrets moves to position themselves for advantage amid radically changing industry dynamics."
1. Develop 5G offers
2. Plan at the micromarket level
3. Rethink network deployment and operations
4. Consider sharing the cost
5. Secure access to key resources
6. Work closely with regulatory authorities
7. Develop a comprehensive spectrum strategy

Critiques of 4 use cases

1. "Enhanced mobile broadband ... wireless data prices are falling and growth in demand can be met in other ways (for example, densification of LTE networks and Wi-Fi off-loading). Another hurdle is that constant connectivity—a must-have for mobile broadband—will be severely limited for high-band 5G due to propagation losses at higher frequencies."

2. "Internet of Things ... average IoT revenues will be a fraction of those for mobile broadband because of low usage. Moreover, 5G will have to compete against other technologies, such as Wi-Fi and Zigbee."

3. "Mission-critical control ... as with IoT, operators can expect the associated revenue to be incremental at best."

4. "Fixed wireless access ... could represent a truly new revenue stream for wireless operators, but typically only in areas where consumers don’t already have access to fiber to the home and DOCSIS 3.0/3.1 cable broadband."

Conclusion: "the economics, business model, and ability to monetize these use cases at scale in the near term to justify a nationwide rollout of 5G in any country today remain unclear"
McKinsey  5G  critique  trends  commerce  business-models  strategy 
february 2018 by pierredv
EXCLUSIVE - Tom Choi: Life after ABS - Via Satellite -Oct 2017
VIA SATELLITE: Given the influx of new players in the satellite industry and the new Low and Medium Earth Orbit (LEO/MEO) players that you have been outspoken against, what does the future hold for a player like ABS?

Choi: As I said many times before … I doubt the majority will ever launch and even if they do most will fail. Why? Let me ask a few questions: Where do they have market access, ground facilities to install their gateways, and most importantly who are their customers? They say they will fill the niche of serving the unconnected but they won’t be competitive to 5G. These are basic questions investors ask. This is why most will not get financing because they cannot answer them. As an example, which Export Credit Agency (ECA) is backing these crazy projects with no customers? Not a single one thus far. Look at what happened when the last company got funded on “hot air:” NewSat collapsed much to the chagrin of EXIM bank. I seriously doubt they want to relive that kind of experience again, this time on a much larger scale. So, the answer to your question is no, ABS will not be materially impacted.
ViaSatellite  LEO  satellite  business  NGSO  critique  interviews 
november 2017 by pierredv
Neurobalm: the pseudo-neuroscience of couples therapy | Mind the Brain
"You may be more able to debunk bad neuroscience than you think. In my last blog post, I began critically examining whether emotionally focused couples therapy (EFT) could be said to sooth the brains of wives who had received it."
psychotherapy  critique 
february 2016 by pierredv
Is the Many Worlds hypothesis just a fantasy? - Aeon
"Nobody knows what happens inside quantum experiments. So why are some so keen to believe in parallel universes?" by Philip Ball -- article doesn't actually answer this question; it's a critique of many worlds interpretation -- "the Measurement Problem, which really comes down to this: between the rainbow-smear of probabilities in our equations and the matter-of-fact determinacy of everything we can actually measure, what on Earth is going on?" -- "the Measurement Problem, which really comes down to this: between the rainbow-smear of probabilities in our equations and the matter-of-fact determinacy of everything we can actually measure, what on Earth is going on?" -- closest to an answer of the Why question: "Most MWI popularizers think they are blowing our minds with this stuff, whereas in fact they are flattering them. ... The result sounds transgressively exciting while familiar enough to be persuasive."
philosophy  science  AeonMagazine  quantum-mechanics  many-worlds-interpretation  identity  selfhood  ontology  critique  modal-realism 
february 2015 by pierredv

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