Hacker News new | past | comments | ask | show | jobs | submit | SCM-Enthusiast's comments login

These were my exact thoughts when i read the headline. But when i read the article, their strongest evidence in their defense is the fact that people with severe disabilities can still perform higher level thought.

tldr; Language is not required for thought, but on page 3 of the link, "Instead, these tasks engage other brain areas that are non-overlapping with the language network (Fig. 1b), although they sometimes lie in close proximity to the language areas"

I used to do rubber duck debugging, but instead i turned into listing exact step-by-step instructions in inline comments. It seems to work like rubber duck debugging, and all it took was for me to "Externalize the steps" so i can think about what needs to happen at each level of the thought heirarchy.

and section 2. you describe memory and thought as similiar in nature but those are handled in two entirely different regions of the brain.


> I sometimes feel like i am standing on the piazza, waiting for this beautiful thought to walk past me. Too scared to talk to it, because she would realize i am too dumb to understand her and a con-artist anyway... but then, every once in a while this beautiful thought turns around and takes over my brain. But maybe, i am truly just mad.

I have a huge quote "Notes" from all the books i've read. This is the first time a quote has made it into the notes that has come from a random comment on the internet. I think i'll carry this quote in the back of my minds eye for the rest of my life.


Oh, well, if i had known this, i would have checked the typos and the grammar. Didn't even think people would comment on my weird ramblings. So: Sorry for bad english quote now in you mind forever!

But seriously, thank you for taking the initiative & time to comment & letting me know this. Weirdly, it means a lot to me. And actually touched me. Which sounds even weirder, but it's true. That someone liked & resonated with this, even when in such a bad form...

Anyway, I really appreciate it & you. I try to leave out no chance to say something positive or let people know they had a positive impact on me, even if it's just such a small thing. Probably because i wish people would let me know more often, as confirmation that all my efforts aren't for nothing. But your comment is actually the only confirmation of me leaving just the slightest trace... you've helped this lonely, broken soul. A lot.

Please keep this in the back of your minds eye as well, when carrying the words there.


but the land it's built on is an appreciating asset.


Purchasing a single piece of land with the expectation that it will increase in value, is similar in many ways as to do so with single stocks.

Land and stock tend to go up in value. But land also sometimes go to 0, just like stocks.

With the booming American car industry in the 50's and 60's, who would have thought that houses in Detroit could go from having a premium price in 1970 to be sold for $1 40 years later?

Who's to say SF isn't going to be next?


A single peice of land may or may not appreciate. but a diversified portfoilio of land will always appreciate if the last 10,000 years has anything to say about it.

The rockefellers and other "Old Money Family's" have the three rules to building multi-generational wealth. Land, Art and Gold.

Even for detroit, land prices have only increased since the 80's[0] and over long time horizons, i'm sure will be back in line with other "Single peice land bets".

[0] https://fred.stlouisfed.org/series/ATNHPIUS19804Q


> A single peice of land may or may not appreciate. but a diversified portfoilio of land will always appreciate if the last 10,000 years has anything to say about it.

I believe there are large parts of Europe that would take centuries if not a millennium to reach the peak value it had during the Roman Empire (measured vs gold).

In general I agree, though. A portfolio is fine.

Most people tend to have most of their "savings" in a single property though.

As an example, what do you think this $2500 property cost when it was new? (Edit: make that 1965, since it's quite old.)

https://www.zillow.com/homedetails/3226-Columbus-St-Detroit-...


Short of it being on a superfund site most residential land will never have a value of 0. It's called REAL estate for a reason. Partial ownership in a company can evaporate, but 405 park west, manhattan nyc will always be there, at least for the next million years.


Some actually sell for $1 ($0 may be technically more difficult), some may sell for less than 10% of what it was once considered worth, which is close enough to 0 for the difference to not matter much.


a person buying a condo in Vancouver generally isn't purchasing land, and if they are, then yes, the land might appreciate even as the thing built on it degrades over time due to a bunch of natural processes (e.g. wood decays)


someone buying a condo is absolutely buying land. That land just is split up across x number of condos. The appreciation that you get on the Condo, is the fact that the land is usually in a very ideal location. That's when the economics of "Going up" even makes sense.


Phase changes and grokking make me nervious... It seems once you reach a certain threshold of training, you can continually "phase-change" and generate these emergent capabilities. This does not bode well for alignment.


the children of time series explores this concept in spiders. What happens if you were able pass down all of your knowledge into your children through genetics and how would that change society.


you should read the book delta v. The only time lunar mining makes sense is when there is a cislunar orbit economy. The delta v required to put things in orbit from the moon is a fraction of that of earth. So, if you have a vibrant manufacturing enviroment in space (Semi conductors, and other deposition methods) which space is more suited for, then the moon becomes a better place to source your materials from.


> So, if you have a vibrant manufacturing enviroment in space

And how does this "vibrant manufacturing environment" get into space? How is it supplied with personnel, food, water, spare parts, etc.?

Let's just focus on one component, shall we? The Moon only has 1/6th of Earths gravity, but to get stuff away from the Moon still requires a launch. That launch requires fuel. There is no fuel source on the Moon, so even if we had production facilities there, there are no high energy raw materials for them to process.

So where does the fuel come from? How about the only place in the solar system we know where we can make rocket fuel: EARTH!

So every liter of rocket fuel used to power launches to supply raw materials to a "cislunar orbit economy", first has to be transported to the moon by launching it from Earths gravity well.

So, where is the gain in efficiency exactly?

Also, where would this "cislunar orbit economy" find a market? The vast majority of people are here, on Earth. So even if there was a way to supply such an economy with raw materials (and energy, and personnel, and so on), the products would still need to be transported to Earth, adding a huge additional cost to everything manufactured. How is this supposed to compete with products made on earth exactly?


>fuel

Hydrogen and oxygen can be made from water, and methane can be made from regolith and water.

>where would this "cislunar orbit economy" find a market?

The uniform distribution of microgravity lends itself to advanced manufacturing methods that cost hundreds if not billions of dollars to replicate here on earth. soooo many of earths manufacturing methods use very expensive means of creating the vacuum that is required, that is provided free in space.

Semiconductors. Turns out here on earth the machines costs hundreds of millions of dollars to etch a wafer because of the use of various technologies to create vacums, control for foreign material, and ensure the micro etches "Stay" and the material "goes". There is a wide discussion, and multiple tests conducted on the ISS that has confirmed this. So, space may be the only way to build next-gen semi conductor tech to get us below 2nm, and a much higher yield, with much cheaper equipment. With the cost of a launch at ~100m on a falcon, the launch would be cheaper than the equipment they are sending up.

ZBLAN fiber optics, growing protein crystals, Electron Beam Physical Vapor Deposition, Regolith refining,

are all done better in space. And they will be cheaper in space, and on the moon and mars. They will be more expensive on earth due to the large gravity well.


> Hydrogen and oxygen can be made from water

Judging by [this][1], good luck trying to find adequate supplies of water on the Moon.

> methane can be made from regolith and water.

Again, good luck with that, because as shown [here][2], the amount of carbon in the lunar soil is, shall we say, not great. And since we are already talking about an immensely energy intensive process here, breaking down rocks in a smelter to get at tiny amounts of Carbon, may not be a very good solution.

So to have a chance at an adequate supply of CO_2 for the Sabbatier Process, you'd have to mine cold-trapped carbon dioxide. Which [may exist][3], or it might not. If it exists, it exists in the coldest regions of the moon, aka. places where you have no access to the only available energy source (Solar). Good luck hauling dry ice across the Moon to the base, especially since it will cease to be a solid the closer the transport comes to the processing plant.

And this process btw. requires HUGE amounts of energy, equipment, machinery and storage infrastructure. [This video][4] gives you a good idea of how difficult making CH_4/LOX fuel with ISRU using the Sabbatier process is ... on Mars, where you can actually pull CO_2 from the thin atmosphere, and likely have more water available.

So in summary:

1. No, we cannot just make the fuel on the Moon

2. Even if we could, it would likely end up being comparatively easier to just ship it there from Earth

3. Even ignoring all that, good luck making the amounts required to keep industrial-scale launches of materials happen

> control for foreign material

If you want to have a real challenge regarding keeping foreign material out, then try manufacturing things in an environment that is filled with hyperstatic, completely dry, microabrasive, pulverized regolith, and having to build clean rooms in an environment with the kind of temperature differentials experienced between the lunar day/night cycle, or worse, in space.

Also, if a clean room fails here on Earth, it's a huge headache for everyone to recover it. If an airlock fails on the Moon, people die, and the production facility gets destroyed by explosive decompression.

> And they will be cheaper in space, and on the moon and mars.

No, they won't, because again: These materials, even if they actually benefited from being produced off-world (and that's a big IF) will only be of any use here on Earth. There won't be any self-sustaining colonies in outer space, or on the Moon, or on Mars. There won't be sprawling industrial sites. We'll be lucky if we can keep a small crew of Astronauts alive on another Planet or the Moon for a few Months until they can get back and start the recovery process after having their bodies wrecked by Microgravity for a prolonged period of time.

So the only market for ANYTHING produced "up there", is "down here", and this, again, is where the prohibitive transportation costs come in and make the whole discussion moot.

[1]: https://en.wikipedia.org/wiki/Lunar_water

[2]: https://en.wikipedia.org/wiki/Lunar_soil#/media/File:Composi...

[3]: https://www.sciencedaily.com/releases/2021/11/211115151010.h...

[4]: https://www.youtube.com/watch?v=Wum8_8sWdeU


I get the direction that the video was going on... but all it did in my mind was prove that it was completely possible. 5k solarpanels, two full football fields or 17 small nuclear reactors is all that is required for the process? I would have thought it'd be more.

I get what you're saying... it will be hard... for sure... Is it possible in the timeframes being discussed? probably not. Is it an endevor for our generation to embark on? yes. It's the greatest adventure ever written, and yeah... it's gunna suck for all people involved. It's a hostile wasteland.

With that out of the way... I think the video you linked tells the story dishonestly. The deltav required to get from mars, nor to the moon back to the ISS, is no where near refilling a full tank. Without a retro burn, it would require around 1/8th of the deltaV.

Secondly, you can send 10, 20 starships before, or each cycle and spin up. No one is saying that the very first time you send people they will use Insitu 100%. Maybe they bring the hydrogen, or the carbon dioxide and try and get a plant going. Or they can send all the fuel required beforehand. Once they have some kind of more permanant presence, they can slowly ramp up and take a more and more of the process on.

Not all these projects need to be solved at once. With 100T carrying capacity of each starship, all the youtube video convinced me of that it will take around 30-40 starships... which isn't that wild.

I would be more interested in what you think about the more advanced manufacturing, despite all the problems and infrastructure required?


> is all that is required for the process?

No, that is only the panels required just to generate the electricity for the process.

This does not include, among other things: cabling, scaffolds, mountings, inverters, electronics, any batteries to cover operation during the night, any machinery required for mining, transportation, and building, nor building materials, piping, storage tanks, the actual sabbatier reactor chambers, insultation, duct tape, spare parts, tools, engineers, food, water, oxygen, space suits, vehicles, or toilet paper.

And keep in mind that for the sake of simplicity, [this assumes almost total conversion of energy][1] already, aka. almost losslessly converting the electricity harvested to chemical energy in the fuel, which of course doesn't happen in chemistry. It also ignores a whole lot of other stuff, outlined shortly after the timestamp linked.

And all that is to refill a single ship over the course of 500 days. Not a fleet. Not regular starts to support industry-scale transport logistics. One. Single. Ship. Over the course of 500 days

And we are, again, just talking about fuel production here. An industry also needs spare parts, personnel, tools, replacement machinery, building materials. The people working there need food, water, oxygen, toilet paper, ...

You know what else an industry needs? Waste disposal. We cannot just dump metal shavings, etc. into space: Because we are talking about orbiting platforms or something similar here, so these waste products would then become hyper-velocity projectiles ripping everything to shreds. So there needs to be a plan for that as well, which again involves all the same problems.

Another thing it needs: Energy. The video outlines how difficult it is to support even a single, scope-limited industrial process in a place where we cannot just connect to the electric grid or access large natural gas reservoirs. Solar panels are nice, but processes like smelting materials, welding, metalworking, anything that requires high temperatures? Good luck trying to cover that with solar.

And again another thing: Heat dispersal. Ever wondered why the ISS has so many fins? Many of those are not solar panels, they are heat-exchangers. And they just have to account for the body heat of a small group of people and their equipment. Try to imagine what an industrial facility would need, just in terms of that.

Yeah, so all in all, I guess that we won't support a "cis-lunar-orbit" industry any time soon. While in theory possible (as in, nothing so far violates any laws of physics), it simply isn't practical, and the cost of anything, from setting it up to maintaining it, would be prohibitive.

> I would be more interested in what you think about the more advanced manufacturing, despite all the problems and infrastructure required?

First I'd need to see tangible demonstrations that "having zero gravity" confers an advantage in the first place.

What do I mean by that? Simple: Does zero gravity enable certain processes, that cannot be replicated on Earth, and is the cost of setting up such facilities, vs. developing alternatives that work here, where we have materials, labour, air, etc. available really worth it.

Because "greatest adventure" sounds wonderful and all that, but when the term "industry" enters the discussion, we have to talk about efficiency, expedience and ROI.

[1]: https://youtu.be/s-MQrp2P2GI?si=DCLRSeeZ2hLePVAl&t=886


their success is limited by how much money they can move. When you are moving that kind of money through quant strats you start to move the market. It's easy to capture a triangle arb with 20k, almost impossible to do it with 10B, because by the time you enter and exit the trade the arb no longer exists or you were moving the market against yourself with your own trades.

One of the genious thing that rentech did was long out of the money bonds, and short newly issued bonds. Seems like such a simple strat, but when you crank up the leverage you can make alot of money.


The book the sovereign individual talks alot about this. Since multi-national corporations can "tax" the world, and the goverments of the world can only tax their citizens, corporarations will only increasingly outspend governments.


There does exist a marketplace for documentation to be cryptographically encoded. E.G. Spec sheets. You must have a verified PGP key to open this document, that is generated for a company after they sign a NDA.


They can be boxed infrastructure that only require a generator for launch. They can be owned and operated by US gov, allowing them to be launched by land, sea or expeditionary. They can theoretically drop cargo anywhere on the planet in 5 minutes. Which is every military tacticians wet dream.


Consider applying for YC's Spring batch! Applications are open till Feb 11.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: