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Ask HN: What's the next big thing that few people are talking about?

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Re: Ask HN: What's the next big thing that few people are talking about?

#271
Real holographic display:

To create an aerial hologram [or a 3d image in space if you will], you need something that will emit light at precise locations throughout a given volume.

I'm investigating the use of Moller electron scattering[0] to create voxels in a 3d coordinate system.

Two electron beams crossing and colliding will emit photons [voxels]. If you can orchestrate collisions in a very fast fashion at various 3d coordinates in an vacuum chamber you could generate a complete image.

I'm working on an article discussing the idea in full, to be published on my blog. My goal is to establish prior art, so this idea cannot be patented.

[0] https://en.wikipedia.org/wiki/M%C3%B8ller_scattering

Re: Ask HN: What's the next big thing that few people are talking about?

#273
Nuclear war. It has fallen out of favor to talk about this as a serious possibility, but the world is in many ways closer to nuclear armageddon right now than it has been at any point since the Cuban Missile Crisis.

People seem to have gotten comfortable with the idea of Ukraine as a low-tempo conventional war, but it could very quickly turn into something much more significant.

Re: Ask HN: What's the next big thing that few people are talking about?

#274
post #215

The stumble over abandonment of ICE vehicles. By 2030 (8 years from now) at least six manufacturers will have stopped making ICE vehicles entirely, and India claims it will ban the sale of ICE-only vehicles. By 2040 (18 years from now) over half of all new cars sold will be electric, and the UK and France claim they will ban the sale of ICE-only vehicles. However, there's still not a plan that makes all that sustaina…

Is there a reason you assume people won't simply charge at night with relatively standard 240V (or even 120V) chargers? Most cars don't average more than 60 miles a day, which is less than 20kWh. In much of the US you could install 10-15 solar panels to do that even in the winter. Now solar panels are mostly made in China (as are almost all consumer electronics), but that seems like a far more general problem to solv…

Charging in cities and apartment compexes is still an unsolved problem, and most people live in cities.

For example, just to provide enough chargers for Philadelphia's 1.5M residents (63% of them drive to work), one of every ~6 car lengths on every residential sidewalk would need concrete dug up and a charger installed. The city will never pay for that, and it would be a logistical and political nightmare. Even if individuals went through a city process to get a permit to do it themselves and pay for & install their own charger, and assuming there was a posted parking limit for only EVs, some jerk down the street with a Tesla will take the spot, and you may have to drive blocks and blocks to find a free charger. Many people may decide to just stick to ICE.

Re: Ask HN: What's the next big thing that few people are talking about?

#275

Earlier quoted context omitted.

I would like to see a more in depth treatment than what I've seen (or what I've thought about). Certainly cross country electric lines aren't going to needed as much because the energy can be produced by a relatively clean factory. With coal, we want it very far away enough away from consumers so as not to cause health concerns. Decentralized energy, at the very least, means we can create solar power plants next to l…

> Certainly cross country electric lines aren't going to needed as much because the energy can be produced by a relatively clean factory. With coal, we want it very far away enough away from consumers so as not to cause health concerns. Decentralized energy, at the very least, means we can create solar power plants next to larger cities and towns. Your going to need very long electric lines, to send clean energy from…

Sorry, I'm not quite sure I understand your point.

There are places that have so much cloud cover year round that it makes solar adoption there effectively impossible? The frequency of these places is such that their energy needs requires the infrastructure remain in place?

Re: Ask HN: What's the next big thing that few people are talking about?

#276

The stumble over abandonment of ICE vehicles. By 2030 (8 years from now) at least six manufacturers will have stopped making ICE vehicles entirely, and India claims it will ban the sale of ICE-only vehicles. By 2040 (18 years from now) over half of all new cars sold will be electric, and the UK and France claim they will ban the sale of ICE-only vehicles. However, there's still not a plan that makes all that sustaina…

EVs aren't going to be popular because they are the solution to climate change. The better solution to climate change is sustainable city planning and development that minimizes energy use for transportation needs, emphasizing walking, bicycles, and rail travel.

EVs are going to take over no matter what because in their end state they're better than ICE vehicles in nearly every way. Quieter, smoother, simpler, faster, cleaner (air pollution), and potentially cheaper.

That said, I absolutely disagree with the amount of shade you're throwing at the technology in the context of climate, emissions, and fuel:

> we need 30% more grid capacity

That's not very hard, especially since EVs are being phased in gradually. We had the same problem with air conditioners and it was no big deal.

> an insanely higher number of chargers

Which will happen because there is a clear financial incentive to build them. They're cheaper to run and maintain than gas stations and the fuel is transported much more easily.

> service companies

Are service companies a finite resource?

> land

What land do you mean? Car-based infrastructure already uses and has a bunch of land. Where is it that EVs need more of it?

> China still controls most of the resources for production

We already have this situation with the Middle East/Russia with oil

Here's the biggest issue I have with your comment: you're minimizing massive reduction in oil usage:

> and only 8 million barrels of crude will be displaced by the estimated number of new EVs

That's a lot! Globally, 43.7 million barrels of oil are used per day for transportation fuel. [1]

That means that EVs will reduce crude oil usage for transportation by 18.3%! That's really significant!

Re: Ask HN: What's the next big thing that few people are talking about?

#277

The stumble over abandonment of ICE vehicles. By 2030 (8 years from now) at least six manufacturers will have stopped making ICE vehicles entirely, and India claims it will ban the sale of ICE-only vehicles. By 2040 (18 years from now) over half of all new cars sold will be electric, and the UK and France claim they will ban the sale of ICE-only vehicles. However, there's still not a plan that makes all that sustaina…

Rooftop solar. Done.

Re: Ask HN: What's the next big thing that few people are talking about?

#278
post #155

I think the next big theme right now is energy. From generation to storage to consumption were going to rethink how we deal with it. Right now our pricing model is broken due to government regulation but I think the coming energy crisis will push utilities to use spot rate metering like Texas has already started in places. Spot rate metering will finally make iot (formally known as the internet of shit) actually make…

I think I speak for a lot of people when I say the last thing I want is for my local power grid to become a low regulation real time market. We've seen the flaws of the Texas approach, and doubling down on it with a sprinkling of IOT tech on top is not gonna go anywhere good.

Not to mention the fact that IoT consumes lots of unnecessary power and stuff like Nest that tries to "conserve energy with AI" ends up consuming more power for an ultimately shittier experience than simply manually managing the system.

I suspect since there's money to extract and profit for the power companies, this will happen anyway in the next 5-10 years across the USA. I'm already bracing for the internet providers to start the same bullshit, claiming that the pipes are getting clogged at peak times...

Re: Ask HN: What's the next big thing that few people are talking about?

#279

Autonomous machines operating in farm land in the USA. Several billion dollar companies could be spun up. Ripe for the taking right now/

"Several billion dollar companies could be spun up" cries in John Deere Monopoly

They and Case deserve to be dethroned. They _should_ understand the problem and have the engineers to solve it, but I think they haven't figured out how to monetize it so they slow-walk it or down play it.

Re: Ask HN: What's the next big thing that few people are talking about?

#280
post #155

I think the next big theme right now is energy. From generation to storage to consumption were going to rethink how we deal with it. Right now our pricing model is broken due to government regulation but I think the coming energy crisis will push utilities to use spot rate metering like Texas has already started in places. Spot rate metering will finally make iot (formally known as the internet of shit) actually make…

Can't wait until Amazon inserts itself in the middle of this IoT energy revolution.

/s

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