Soviet Union built one in Crimea. It worked. And nothing special was used that could not be built 200 years ago. But it was rather inefficient and in presence of cheap coal there were no point to continue with it after the collapse of Soviet Union.
Casualties from Mongol invasion are very likely much less than what was given in Wikipedia. There are good arguments that in fact probability of being killed has not changed throughout the history. It just in modern times wars are less frequent but are more devastating.
Mills using water as a source of energy are known for thousands of years. If oil, natural gas or even coal would not exist, that and wind energy would be used on much bigger scale. Then a solar power station using thermal solar could be built like 200 years ago. And nuclear energy would be eventually discovered.
One does need carbohydrates for industrial bootstrap. Germans during WWII produced liquid fuel from coal. Modern version of this process becomes competitive with oil-base fuel around 80 USD/barrel.
Yes, this process is very energy intensive and generates like twice CO2 per energy used. But in a hypothetical world without oil and natural gas it may lead to earlier start with electric cars and renewables so the total amount of CO2 put into atmosphere would probably be the same. Plus, as coal is much more evenly distributed, there would be much less reasons for wars.
This only works up to a certain volume. The world economy requires about 38 billion barrels of oil per year. If you processed 100% of all grain, sugar crop, tuber and oilseed on Earth into liquid fuel, leaving zero for food, you'd get about 6 billion barrels of oil-equivalent in liquid fuels. Since it has to compete with food, the actual number would be much lower. It's not even close to being able to sustain our civilization.
There is absolutely enough coal to make liquid fuel for the current civilization. But if oil/gas would not exist, then electrical cars would be on the road much earlier as burning coal to produce electricity is much more efficient then converting it into liquid fuel to burn in a car engine. As electrical cars produces roughly the same amount of CO2 when using electricity from coal as ICE car running on gasoline, the climate impact would be roughly the same.
Then in a hypothetical scenario of 20th century without oil/natural gas nuclear energy would be much more widespread at this point and CO2 impact would be lower.
They use the datasenter for model training, not to serve online users. Presumably even if it will be offline for a week or even a month it will not be a total disaster as long as they have, for example, offsite tape backups.
You can setup a separated account with a long password on MacOS and remove your user account from accounts that can unlock FileVault. Then you can change your account to use a short password. You can also change various settings regarding how long Mac has to sleep before requiring to unlock FileVault.
With that setup on boot or after a long sleep one first must log in into an account with longer password. Then one logs out of that and switches to the primary account with a short password.
If one kilogram of stuff consumes just 100Wt, then in one month it consumes about 300 MJ. So as long as things works for a year or more energy cost to put them into orbit becomes irrelevant.
To keep things in orbit ion thrusters work nicely and require just inert gases to keep them functioning. Plus on a low Earth orbit there are suggestions that a ramjet that capture few atoms of atmosphere and accelerates them could work.
Radiative cooling scales by 4th power temperature. So if one can design electronics to run at, say, 100 C, then calling would be much less problematic.
But radiation is the real problem. Dealing with that would require entirely different architecture/design.
I have found that using Cursor to write in Rust what I previously would write as a shell or Python or jq script was rather helpful.
The datasets are big and having the scripts written in the performant language to process them saves non-trivial amounts of time, like waiting just 10 minutes versus an hour.
Initial code style in the scripts was rather ugly with a lot of repeated code. But with enough prompting that I reuse the generated code became sufficiently readable and reasonable to quickly check that it is indeed doing what was required and can be manually altered.
But prompting it to do non-trivial changes to existing code base was a time sink. It took too much time to explain/correct the output. And critically the prompts cannot be reused.
Same though lately discovered some rough edges in rust with LLM. Sticking a working app into a from scratch container image seems particularly problematic even if you give it the hint that it needs to static link
I have lived in Spain for the last two years and observed the luck of maintenance in a lot of things.
For example, people typically pay for house/apartment insurance. But insurance companies never send a person to check for things like leaking pipes or whatever. Rather they simply wait until an accident happens and dispatch an emergency crew and cover a lot of damage that could be easily prevented. Then people tolerate non-trivial damage to homes/apartments like leaky roof not reporting it to insurance companies for weeks.
Then with cars people often do not follow the maintenance schedule and insurance companies do not ask for that. Typically people drive until damage happens due to a minor accident or maintenance are forced by state required technical inspection once in few years. The car companies even offer free maintenance checks as a part of guarantee but people skip even that.
Yet when someone spends efforts to complain, thinks do gets done. For example there a city service to remove graffiti on public areas. If one files a complain, they react and remove the graffiti. However sometimes one needs to send a complain twice.
I think you are describing how the entire world works. I have lived in 3 western European countries through my life, and they all work this way.
Never I had the pipes in my home inspected, even now that I live in areas where it freezes regularly.
Never has anyone (not even my insurance) forced me to follow any particular maintenance schedule (albeit I'm quite sure somewhere in the fine print it will read that if the accident is because of poor maintenance they'll just ignore the claim).
Here the city service to remove Graffiti is almost overnight, and works better than many other public services...
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