81–90 of 114 posts
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I saw it linked from the comments on a Tweet by Karpathy and found it intellectually curious. > By posting GPT generated text we’re polluting the data for its future versions https://twitter.com/karpathy/status/1284660899198820352
You seem to have gotten your replies mixed up. This looks like it's for the GPT "Bitcoin" thread?
Low-background lead is also sought after in shipwrecks [0]. With lead it isn't contamination from nuclear tests that's the issue, but natural radioactivity that needs hundreds of years to decay. [0] https://www.theatlantic.com/science/archive/2019/10/search-d...
It's always confused me how mined lead somehow has more radioactivity. Shouldn't the lead in the ground also have decayed over time? Also, it makes me wonder why someone enterprising hasn't stockpiled a few tons of the stuff somewhere to let it become low background lead for the future. You'd think that some government or another would be able to drop a million dollars on putting a lead stockpile somewhere safe for t…
Im always curious how we will send messages to future civilizations. How will we ensure we’ll be remembered or even noted in 10,000, 100,000, 1 million years? How can we prevent the same disaster(s) that eventually wipes our civilisation out from repeating again in future intelligent generations (human or otherwise) Could environmental markers like these be the way? After all, it’s how we look at the past today
Build large stone piles. https://en.wikipedia.org/wiki/Great_Pyramid_of_Giza
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What would be the timeframe over which one would make a profit? Our global financial system is based on the 30 year U.S. Treasury bond. There are no economic incentives to plan beyond 30 years.
This is interesting. Can you point me to anything that will expand on/help me understand this?
Im always curious how we will send messages to future civilizations. How will we ensure we’ll be remembered or even noted in 10,000, 100,000, 1 million years? How can we prevent the same disaster(s) that eventually wipes our civilisation out from repeating again in future intelligent generations (human or otherwise) Could environmental markers like these be the way? After all, it’s how we look at the past today
We already know what can last for literally millions of years: Life. Maybe we could encode some information in birdsong, tree rings, or the matting patterns drawn by fish in the seafloor. :) https://www.youtube.com/watch?v=hpdlQae5wP8
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Extremely difficult to separate different molecules that differ by only the weight of a single neutron.
They are using Oxygen, Oxygen can't become radioactive for longer than a few seconds anyway. All they need to do is filter for pure oxygen, nitrogen is fine as well. It's really just CO2 that's the problem.
Also, maybe this isn't really a concern, but "high temperature and pure oxygen" makes me think "metal fire."
Since tabacco gets its cancer making polonium from the air, I wonder if smoking got riskier because of the nuklear testing.
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The Battle of Midway was fought in spectacularly deep water, on the order of 17,000-18,000 feet deep. This would make salvaging difficult, if not impossible. Scapa Flow is shallow enough for divers. Once we run out of cheaply salvageable steel, we'll likely turn to steel smelting processes that do not introduce air into the steel. These processes require dramatically more energy and are thus more expensive, but will…
> steel smelting processes that do not introduce air into the steel. Air is perfectly fine. Both Oxygen and Nitrogen do not stay radioactive for longer than a few seconds. It's CO2 that is the problem, specifically the carbon. And of course any other random impurity. They could just use cryogenicaly distilled air, and take the nitrogen-oxygen part (the boiling points are very close).
I'm not sure about some of the the claims of the Wikipedia article. * First, the article implies that air continues to be the main reason for contamination of steel. It might have been the case, back when atmospheric levels for radioactive elements were higher. However now there is less contamination in the air [0], and the main source for contamination is recycled steel. Either because it itself is non-low-backgroun…
You should update the Wikipedia article. I mean, you've already got the references.