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hwc

240 karma · joined June 7, 2013

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hwc··on One Revolution per Minute [video]
And no known material has enough tensile strength to make it work!
hwc··on One Revolution per Minute [video]
The view gives me nausea; I don't want windows! I want my spacecraft to have thick skin and a Whipple shield!
hwc··on WTF Happened in 1971? (2019)
I suspect that all of those things happened at once.

The trigger might have been the end of the gold standard on August 15, 1971. I suspect that we had been going too long without an increase in the gold backing our money supply, and after decades of temporary fixes to the Breton Woods system, things fell apart then. Afterwards, although we moved to a superior fiat currency, most people didn't really believe in the new system for at least a decade. (And the popularity of bitcoin seems to prove that some people still believe that fixed monetary supply is a good thing!)

This allowed the other factors, plus the shock of having to rely on foreign oil, plus the rise of reactionary tax policy, to really mess up the economy in ways that we haven't really fixed yet. Yes, we stabilized the dollar by the early 80s, and yes we have started to ween ourselves off of foreign oil, but the low income taxes on the highest earners remain in place, along with lots of loopholes that make it easy for billionaires to pay almost no taxes.

I don't know the long-term consequences of carrying so much public debt (relative to GDP), but it seems that the only possible way to reduce it (without making things worse) is to tax the rich, which is now going to be incredibly difficult since they have so much power at the moment.

hwc··on On keeping sketchbooks
I have a couple of nice leather covers for my composition books. One for personal notes and one for a work notebook. <https://amazon.com/gp/product/B00ITXB8UQ>
hwc··on Can you use a class in C?
why not forward decare a struct type in `ifndef __cplusplus` and use pointers to that type instead of `void*` pointers?
hwc··on Go 1.21 Released
I'm looking forward to the log/slog package. I might start switching over from our homegrown solution next week.
hwc··on Ask HN: What are some Git aliases you setup that save you time?
I have a script checked into a git repo so I can more easily sync between machines.

https://gitlab.com/halcanary/config/-/blob/master/git_config...

hwc··on A Case of the MUMPS (2007)
I had the exact same experience.

The company in question is Epic Systems, maker of very popular medical records software.

hwc··on Workers rely on medieval era tech to reconstruct the Notre Dame
they should have built the roof with steel & glass so it can't burn!
hwc··on That people produce HTML with string templates is telling us something
I've begun relying on building DOM trees and then using a render() function to serialize them. e.g. <https://gist.github.com/HalCanary/fd4ec75ae950196454f09051a5...> or <https://gist.github.com/HalCanary/169105aad5971268988fee80d1...>.

When producing PDF document back when I was in charge of SkPDF (used by billions!), we had to generate the PDF files that way, since the serialized format is very precise.

hwc··on Two types of C programmers
Also, wants to use C ABI in other software.
hwc··on Battery-free Game Boy (2020)
Great! Now do an e-ink book reader!
hwc··on NanoGPT
just started watching your lectures! they are great!
hwc··on It's easier and faster to pirate an e-book, than it is to buy it
I wish we could just buy DRM-free physical copies of ebooks, music, and movies on SDCard-sized ROM cartridges.
hwc··on I use a Raspberry Pi as my daily computer
If someone would build a Linux-friendly competetor to the ARM64 Mac Mini, I would consider that for my home computer.

As it is, I either have to stick with x86_64, go to Apple, or have an under-powered RPi.

hwc··on Why 12 notes in Western music?
Every note is a sum of harmonic sine waves, usually not just a single one. The first harmonic of 440hz is 880Hz. So plucking a harp string for A4 will also produce the A5 and A6...
hwc··on NASA’s newest rocket is a colossal waste of money
The Orion spacecraft can't even make it to low Lunar orbit.

The SLS block 1 can put 95 tons into low Earth orbit. Compare to the Falcon Heavy, which can put 63.8 tons into LEO. Is it worth paying over ten times as much for only 1.4 times as much cargo?

hwc··on How to Exit Vim

    kill -9 $(pgrep vim)
hwc··on Aztec Diamond
My contribution: https://halcanary.org/mathapplets/toadshuffle/#64
hwc··on System Font Stack
What's wrong with just using `sans-serif`, `serif`, and `monospace`?
hwc··on Please Stop Using Grey Text
My web site is black text on white background (or white on black if `@media (prefers-color-scheme:dark)` is set). If someone wants LESS contrast, they can change the settings on their monitor.
hwc··on Xfig
Yes, this.

Also, I wrote a small library that lets me programmatically generate SVGs with Python. This lets me create very precise vector images. This fills some of the same needs.

hwc··on Please put units in names
Also, when using Go, use the time.Duration type in your API. It makes things unambiguous but adds no overhead.
hwc··on Perl code that is syntactically correct only on Fridays
I just want to specify International Atomic Time, relative to some universally-agreed-upon epoch, in nanosecond units.
hwc··on A Lonely Universe
If you simply assume that your spacecraft uses its own engines to accelerate to cruising speed, then the Δv to decelerate is approximately equal to the Δv to accelerate.

Similarly, if the engines are operated at a constant acceleration, then the distance needed to decelerate is equal to the distance needed to accelerate.

Fuel(/reaction mass), on the other hand, us not equal. The fuel to be used to decelerate must also be accelerated first, meaning more fuel is used to accelerate than to decelerate.

hwc··on Poll: Where do you live?
Texas is without power at the moment.
hwc··on We have jetpacks and we do not care
Also, his politics changed drastically over the course of his life, going from a New Deal Democrat to a Goldwater Republican.
hwc··on How to design a house to last 1000 years
Arcosanti is a lot of concrete, as I recall.
hwc··on There oughta be a WiFi Game Boy cartridge
Or you can just buy a Nintendo Switch. I wonder why they don't have game-boy emulation yet.
hwc··on Chrome breaks my website by hiding www in address bar
That is a problem to be fixed by the server, not the client.
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