ericbarrett

7 ms·

61.
by ericbarrett 2y ago
This was a great writeup, really clear and engagingly written, about an interesting and subtle bug. If the author hadn't mentioned they were 15 I would have assumed it was from a seasoned security professional. To Daniel/hackermon
62.
by ericbarrett 2y ago
Timeshift (included with Mint, but I don't think it's exclusive to it?) is a much more conventional solution—I believe it uses rsync under the hood—but it works very well for exactly this kind of experimentation. It can revert co
63.
by ericbarrett 2y ago
Tangential—methanol poisoning from an improper brewing or distilling process is largely, maybe completely, a myth. Where toxicity events have occurred they are almost always deliberate or accidental adulteration, e.g. fortifying moonshine w
64.
by ericbarrett 2y ago
The good ol’ “Tell me you store passwords as plaintext without telling me you store passwords as plaintext” The other message I get from sites like this is, “Our developers have no idea how to escape SQL parameters even though this has been
65.
by ericbarrett 2y ago
Right, this is a possibility—but complex life doing so, in vacuum, at 100K? All I'm saying is, knowing what we know about chemistry, it seems extremely unlikely. I'd be ecstatic to be proven wrong empirically, but it doesn'
66.
by ericbarrett 2y ago
Radiation levels on Europa's surface are about 5 Sv in 24 hours, which is a massive dose; for reference, this is enough to kill 50% of humans exposed to it and make the survivors extremely ill. It is also extremely cold (-171C mean) an
67.
by ericbarrett 2y ago
I did something similar between jobs—built a k8s "cluster" on my home Linux box using kops+qemu. It didn't make me an experienced admin, but it was really enlightening and fun! Projects like these are a great way to learn.
68.
by ericbarrett 2y ago
Mass does not strictly matter, it is the ground TWR of the launch config. Heavier rockets do tend to have a lower TWR but it is not a universal rule. Starliner is also held for confirmation of all systems being functional even with the SRBs
69.
by ericbarrett 2y ago
This has to do with the launch vehicle's thrust to weight ratio (TWR) on the ground with a full tank. It's usually between 1.1 and 1.4. The Russian Proton has a famously high ground TWR and is known for "leaping" off the
70.
by ericbarrett 2y ago
When I started in tech I worked for a storage vendor’s tech support. One of my first big cases was troubleshooting why a customer’s files older than a week were disappearing. Given the topic, I’m sure you can guess—they had it mounted under
71.
by ericbarrett 2y ago
Multipart uploads are not the same as append; an object being multipart-uploaded doesn't exist in the bucket namespace until the upload is finalized, and once that is done it cannot be modified without overwriting.
72.
by ericbarrett 2y ago
I was once standing outside a night club in Brooklyn, next to a construction site, when a rat came charging around the corner being chased by a cat. The rat smacked straight into my ankle and bounced off, briefly stunned. The cat also froze
73.
by ericbarrett 3y ago
But ChatGPT is a product, not a model. Might there be an augmenting OCR process feeding it the image's text?
74.
by ericbarrett 3y ago
MechJeb + Realism Overhaul offers a "Primer Vector Guidance" ascent controller that (I think) is based on the space shuttle's Powered Explicit Guidance. It's definitely designed to work with more realistic spacecraft; i
75.
by ericbarrett 3y ago
Lawyer. Lawyer lawyer lawyer. This is the only answer. You don't need to go in guns blazing, but you do need good legal counsel even before you talk to your business partner. A lawyer will be able to tell you your rights, what you do
76.
by ericbarrett 3y ago
I was recently gifted a recipe book via Amazon. I was excited until I opened it up—it was just low quality LLM generated recipes, poorly typeset. There's no escape.
77.
by ericbarrett 3y ago
Nah, even the big ones are shown sauntering through the atmosphere at maybe Mach 3, trailing smoke and flames like lit pitch. A city-sized asteroid wouldn't be more than a bright dot until the last seconds before entry, and at inters
78.
by ericbarrett 3y ago
Awesome link. Reminds me that one of my biggest gripes with movies is that when they show meteors (or whatever) entering Earth, it's never at realistic speeds. They're always super slow and floaty, hovering in the sky to menacing
79.
by ericbarrett 3y ago
The story: https://www.baen.com/Chapters/0671878522/0671878522___1.htm
80.
by ericbarrett 3y ago
That's a pretty good list. For a meteor impact, I'd cite the Tunguska Event, which was a "3-5 megaton explosion" in Siberia in 1908: https://en.m.wikipedia.org/wiki/Tunguska_event
81.
by ericbarrett 3y ago
Seconded! Also check out a complex shadow (like that of a bush) just before or after totality. The camera obscura effect will generate many images of the eclipse crescent, it's really uncanny.
82.
by ericbarrett 3y ago
> debug symbols In ye olden days it was common to distribute a binary without debug symbols, but to keep a copy of them for every released build¹. If an application crashed (panicked, signalled, etc.) you got a core dump that you could
83.
by ericbarrett 3y ago
> .ch Switzerland?
84.
by ericbarrett 3y ago
I've been shocked by 300V DC @ 500mA and I'll take the equivalent AC any day. Obviously both can kill you, but the DC was far more painful and instantly gave me 3rd degree burns. Also made me ululate some kind of tone I didn'
85.
by ericbarrett 3y ago
This is commonly avoided by not putting memory pressure on your O_DIRECT application, which is probably an RDBMS on a dedicated single-purpose host. Not saying more work in the space wouldn't be welcome and interesting, just that it&#x
86.
by ericbarrett 3y ago
I think you give the whiteboard far too much credit. In the succeeding two decades I have worked at many companies filled with past, present, and future FAANG engineers, and I can definitely say knowledge of algorithms isn’t a defense again
87.
by ericbarrett 3y ago
Was a long time ago, way before them. I agree though, glad to have changed fields.
88.
by ericbarrett 3y ago
I worked for a storage startup in the South Bay in the late 00s which did something like this. After staff crunched to deliver the base operating system and kernel controllers, management gave across-the-board poor reviews to all IC staff t
89.
by ericbarrett 3y ago
I was an FB infra engineer in 2010. It's not accurate, there was already a "retro" SEV analysis process with a formal meeting run by Mike Schroepfer, who was then Director of Engineering. I attended many of them. He is a genu
90.
by ericbarrett 3y ago
Not GP but I was just starting my career back then. I remember commute traffic on 101 through San Jose and Sunnyvale going from bumper-to-bumper to smooth sailing, where you never even had to touch your brakes. From the crash of April-ish 2

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