chris_va

6 ms·

31.
by chris_va 11mo ago
Geopolitics discussion question... As a corollary, would the ~$1T of (mostly?) state-backed investments into the developed world then imply a fairly large exposure to potential asset forfeiture/freezing in the event of a Taiwan invas
32.
by chris_va 11mo ago
Out of curiosity, what happens when someone does not own a smartphone (or the battery is dead)? They just can't fly? And, if their server flaky, does that mean all boarding will stop? If the agents can check people in manually, it seem
33.
by chris_va 11mo ago
> Properly formed eyes are a mark of quality. Except when I asked someone who makes cheese in Switzerland, they told me almost the opposite (and mostly that they export the junk cheese to the US and keep the good stuff). As an aside, wha
34.
by chris_va 11mo ago
This is Alaska 37, wings up turning base over Coney Island...
35.
by chris_va 11mo ago
Presumably at the cost of shading your neighbors and high wind loading/expensive mounts. There is no free lunch, and traditional solar installations don't usually have a lot of light missing the panels.
36.
by chris_va 1y ago
Well, because they probably never will. Phones and laptops are weight/volume sensitive, and sodium ions are a lot larger than lithium ions, thus the battery energy density is lower.
37.
by chris_va 1y ago
You make an argument as if all environmentalists were the same entity. It's really very reductionist, maybe this isn't the right forum for you
38.
by chris_va 1y ago
(disclaimer that I manage a climate&energy research group) Most of the comments here are speculative. The TLDR is that coal plants have trouble ramping their production up/down quickly, unlike natural gas which can do so in minutes
39.
by chris_va 1y ago
(I am not a lawyer) You may find the "Thin skull rule" interesting for criminal liability
40.
by chris_va 1y ago
I think the article does not explain this well, but (having worked in an applied science field for many years) much of the work is picked up from these failed projects by other members of the field. Sometimes this is quick, sometimes years
41.
by chris_va 1y ago
Maybe someone with more of a bio background can comment on the actual paper. When I look through the figures, I don't see a strong an evidence as they are claiming in the text. E.g. figure 1G... naive image analysis (to me) does not ma
42.
by chris_va 1y ago
Yes. I also hate this "is it factual" question because it ignores the underlying problem. It could still be factual and read "Senate Republicans have blocked voting on S 2882" instead, or more extreme "Registered Re
43.
by chris_va 1y ago
For those technically inclined, look up Ekman transport. And if you rabbit hole far enough, you'll encounter one of the most awe inspiring units of measurement, the Sverdrup. As an aside, Panama is a particularly sensitive point in cli
44.
by chris_va 1y ago
Well, SpaceX originally wanted 1000km+ orbits for Starlink, which would basically never have decayed. Said fear was relevant.
45.
by chris_va 1y ago
(personal opinion) I thought it was a nice stepping stone for people to learn management without having 10 people dumped on them. But it looked bad on paper.
46.
by chris_va 1y ago
As an aside, methane leaks from coal mines can be worse than upstream leaks from O&G.
47.
by chris_va 1y ago
This isn't really venture investing at this point. The valuation risk calculation is very different for preferred shares than common stock, and with a healthy ARR they have very little risk (maybe not much profit, but it's not tha
48.
by chris_va 1y ago
See also https://erichorvitz.com/planesenors.pdf and https://www.microsoft.com/en-us/research/project/windflow/
49.
by chris_va 1y ago
A better link: https://www.ipp.mpg.de/5532945/w7x?c=5481737 (there is some irony in using the iter.org link for a stellarator announcement) 1.8GJ over 360 seconds, beta of 0.03
50.
by chris_va 1y ago
(not the parent, I don't have a specific number) Generally speaking, the economy is not a zero sum game (by definition), or we would never have made it past the first 50 people in New Amsterdam. Every person here on a visa interacts wi
51.
by chris_va 1y ago
I realize UBI has been a popular topic on HN, answer me this... UBI, if implemented, would move O($10T/year) around the economy. We've seen a lot of small scale studies, which basically boil down to giving people money == life imp
52.
by chris_va 1y ago
One can now get (flexible-ish) multi-junction PV (say 29% efficiency) from the factory for under $1/W. Still a higher price than the $0.2/W, lower efficiency panels, but when I messed with panels I felt like we were living in the
53.
by chris_va 1y ago
Not that the paper was clear, but I assume that is the maximum heat rate across the entire airplane. If only 1/4 of the plane sees the heating (say wings), that adds up about right vs the kinetic energy.
54.
by chris_va 1y ago
A black surface can re-radiate 1E5W/m^2 at ~1100C (assuming I calculated correctly). So, paper is out, but maybe glass would work ok :)
55.
by chris_va 1y ago
Trondheim also has a university (which increases the odds of a party happening), and one could also walk across the entire city in less than an hour :). Most cities in the US suffer from being designed around cars, but that has not changed
56.
by chris_va 1y ago
"Our best-performed and cross-validated random forest model ... " Someone had fun with that abstract. As an aside, though darker trees absorb more sunlight than snow/ground, and the albedo effect starts to dominate in this re
57.
by chris_va 1y ago
Fructose is processed by the body quite differently than sucrose, in a way quite relevant here. And actually one of humanity's major evolutionary advances.
58.
by chris_va 1y ago
(your comment reminds me of Monty Python's argument skit...) I am merely pointing out that the article, as written, glosses over an interesting an important detail.
59.
by chris_va 1y ago
The author seems to gloss over the economy not being a zero sum game. As an example, since this is HN: the US creates a ton of startups. Any country that creates new businesses is going to see foreign investment, which on paper leads to a t
60.
by chris_va 1y ago
I bet you are right. I had a forensic linguistics TA during college who was able to identify the island in southeast Asia one of the students grew up on, and where they moved to in the UK as a teenager before coming to the US (if I am remem

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