deepnotderp

5 ms·

1.
by deepnotderp 9mo ago
> t also required just the right combination of natural resources (coal) and economic conditionsL deforestation This argument is repeated often, but I don't think it's really true. Both Savery and Newcomen's engines were i
2.
by deepnotderp 11mo ago
It’s difficult to cmp diamond is the issue I’d assume
3.
by deepnotderp 11mo ago
Yay for fracking! Yay for natural gas!
4.
by deepnotderp 1y ago
New hardware could greatly reduce inference and training costs and solve that issue
5.
by deepnotderp 1y ago
Yes but one of the reasons that coal is being replaced by gas is because of the capex of the steam turbine
6.
by deepnotderp 1y ago
Oh my bad, you’re right Re: Nat gas, agreed, it’s not solar though, storage is much more expensive Thermal energy still needs to drive a turbine to generate electricity
7.
by deepnotderp 1y ago
Sure, but conventional DRAM endurance is 10^15 or more
8.
by deepnotderp 1y ago
$3/GJ is $108/MWH which any large scale fission buildout would easily beat for thermal energy costs
9.
by deepnotderp 1y ago
10^11 cycles is not “practically unlimited endurance”, that’s less than a second of use at 1 GHz
10.
by deepnotderp 1y ago
Thermal storage has very poor discharge rates unfortunately (usually slower than a day), as well as surprisingly high cost once you factor in inefficiencies and turbine cost
11.
by deepnotderp 1y ago
MCF has a bunch of challenges, eg no good pigtail connector, need for rotational alignment, inability to radix (MCF is great for point to point, less good if you want to fan out from one chip to multiple chips), etc And then even after all
12.
by deepnotderp 1y ago
They do have higher energy density, it’s just a low power density
13.
by deepnotderp 1y ago
This is a lot of words to say “solar + battery lcoe is $70/MWH and gas is $40/MWH, but most places outside the U.S. don’t have access to tons of cheap gas so it’s more expensive there” And no, they are wrong, gas is still currentl
14.
by deepnotderp 1y ago
FEC latency is >> propagation delays at these distances, so that's probably the dominant factor in most cases
15.
by deepnotderp 1y ago
Hyperspectral camera?
16.
by deepnotderp 2y ago
We need to move zoning to the federal level like Japan We must decide whether we’ll be a civilization that bows to NIMBYism and stays stuck in squalor or allow building the future.
17.
by deepnotderp 2y ago
Once again nonsense, productivity has been increasing in America over the last 20 years but real wages have not. As always, don’t confuse textbook theory with real life!
18.
by deepnotderp 2y ago
Nonsense. “Free trade” here refers to inter-country globalized trade across borders, not free markets within a confine. There’s a much stronger case to be made that industrial policy has resulted in prosperity for Asia, ironically the opp
19.
by deepnotderp 2y ago
You can actually make curved dies already- there’s a company doing that for image sensors, if you thin silicon down it becomes flexible
20.
by deepnotderp 2y ago
No, there’s a class system for laser safety The rating is for you to stick your eyes right up to it for a long period of time and still be fine
21.
by deepnotderp 2y ago
The SNR for flash Lidar is really low because you spread the beam out over such a large area. Most automotive Lidar already operate in a “photon starved regime”, ~200-300 photons per return[0]. If you spread that over the entire scene, your
22.
by deepnotderp 2y ago
I enjoy how people are dunking on this by saying “omg this is what happens when engineers dare to have thoughts on other topics” when this is very similar to the theory for CBT in psychology
23.
by deepnotderp 2y ago
Nah, nat gas is cheaper The problem is that not all parts of the world have access to cheap nat gas
24.
by deepnotderp 2y ago
There are new dielectric refrigerants that aren’t as polluting, but they’re more expensive
25.
Missiles in a Shipping Container(tapaghosh.substack.com)
4 points by deepnotderp 2y ago|4 comments
26.
by deepnotderp 2y ago
It’s expensive, not needed for most consumer workloads and ironically, is actually often worse for latency for many patterns, even though it’s much higher bandwidth
27.
by deepnotderp 2y ago
GPT-4 could’ve written this article better- hey there’s an use case right there!
28.
by deepnotderp 2y ago
Whenever the topic of index funds come up, people should remember: 1. The benchmark for hedge funds is not the sp500, it’s the bond market 2. Because the sp500 is inherently a bet , that America’s top few companies will perform well. Thi
29.
by deepnotderp 2y ago
TSMC spends ~$30B every 2 years
30.
by deepnotderp 2y ago
You could with plasma/chemical dicing, and people have But it breaks too much of the existing flow to be worthwhile

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