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simpsond

316 karma · joined March 1, 2011

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simpsond··on Meta shares drop 20% on Q4 earnings miss, weak outlook
Growth is plateauing looking at earnings and guidance, so their market cap will reflect fair market value. Growth stocks need to accelerate to maintain high valuations. That and the market is extra sensitive right now IMO. Their numbers are staggering, but earnings and guidance isn’t.
simpsond··on I Built a Shed (2020)
You can always do it the hard way and have an inspector tell you what is wrong, fix it, repeat. The whole point of inspection is to get it right. This method isn’t cost efficient for starting. Find friends to ask questions before starting to reduce inspection failures.
simpsond··on Life is too short to depend on unstable software
If it becomes serious, and crystal becomes a problem, then you can always port it. What are the odds of both those things happening? Give it a shot.
simpsond··on Graceful Degradation (2014)
Back pressure is often useful. Slow down the pipeline from the bottleneck to the source. At some point it’s important to cause failures, informing the source. Those failures can also be intentionally delayed. These techniques are used by networking systems to keep services from falling over. Tuning the knobs for when to fail, when to delay, etc is a hard problem. That is probably why there are so many congestion control algorithms for TCP.
simpsond··on Black 3.0 – The blackest black acrylic paint
Yes, but if you have a HUD which projects on the windshield, you can no longer see it. Unless you tilt your head. This is a minor annoyance.
simpsond··on Robinhood Accounts Looted, No Customer Support
At this point I think a more fitting name is: RobberBaron
simpsond··on The world is drinking less coffee while office workers stay home
I would say espresso making at home is an expensive hobby unless you are willing to tolerate variability in the output. A decent stable machine is going to be close to 1k and the really nice home machines starting at 3k. A good grinder is also expensive. I got all the gear (buying stuff used where I could) and I have spent maybe $1500 on components. I love it, but I wouldn’t recommend it to someone who isn’t willing to put in time to learn and money for decent tools.
simpsond··on Aquarius builds an engine others only dreamed of
Yup, two stroke engines are phasing out. Some places have banned them years ago, like Lake Tahoe. I grew up with dirt bikes, and two strokes were the most powerful and fun.
simpsond··on Show HN: Runnaroo – A new search engine
Nice work! One bug/feature I noticed: Once focused on the image tab, if I revise my search, the image tab loses focus and the primary search results tab gains focus. It wasn’t the expected behavior for me.
simpsond··on Chloroquine has shown apparent efficacy in treatment of Covid-19
I just recently watched an interesting video about COVID-19, Zinc and Clororquine. It explains some of the fundamentals: https://www.youtube.com/watch?v=U7F1cnWup9M
simpsond··on New Chip Brings Ultra-Low Power Wi-Fi Connectivity to IoT Devices
That is true, but, there are applications where the majority of the power budget goes to the radio, such as a wireless sensor. I worked with battery powered wifi sensors in the past, and very infrequent transmissions (15 minutes) still accounted for 90+% of the power budget. Average current for a 2-3 second transmission was something like 60-80 mA, with a huge in-rush current on boot. I see this and think it's probably too good to be true in practice for something like that.
simpsond··on Introducing E2, new cost-optimized general purpose VMs for Google Compute Engine
Maybe a little off topic: AWS also has savings plans now, which gives a discount based on a commitment of hourly spend on compute. A bit easier to manage than RIs.
simpsond··on Myths Programmers Believe about CPU Caches (2018)
If you have two threads reading then writing values in memory, you still need synchronization/atomic changes at the software level.
simpsond··on Build OpenJDK for a Nice Speedup
Yeah, I suspect a good chunk of the performance improvement is related to GC performance improvement. The netty benchmark with pooled buffers compared to unpooled buffers hints at that (although I don't know for sure).
simpsond··on Xfinity Is Man-in-the-Middle Attacking My Internet
I agree it is "pretty much standard" but the ISPs and other network providers are not doing this with TLS traffic. They are only injecting the scripts in HTTP requests without TLS, at least in my experience.
simpsond··on Xfinity Is Man-in-the-Middle Attacking My Internet
Cox does this as well. I was recently staying a hotel and they were doing something similar prompting me to rate my experience. I started thinking about standards to make this kind of thing impossible... Ultimately TLS solves this issue. We should be bullish on making TLS standard.
simpsond··on Bank of America's CEO says it's saved $2B per year by building its own cloud
Yep, sed supports that syntax (substitute). echo 'There are ~250k employees at JP Morgan, not employees.' | sed 's/employees/engineers/2'
simpsond··on Coffee Is Hard
If coding coffee is hard, coding espresso is really hard. More steps, more precision required... just like making espresso in reality. I like the theme of the article.
simpsond··on ‘This Did Not Go Well’: Inside PG&E’s Blackout Control Room
This is a good point. What is utility here? I think the primary utility is highly available electricity. How is that maximized? I don't know how to do that tactically, so I should stop talking... but strategically it's about minimizing risk. I suppose that involves having a highly connected grid to many power sources (solar, wind, nuclear, hydroelectric, etc) to mitigate a SPOF. It should also involve low risk transmission (underground where possible, multipath, etc). This all comes at a great cost... but if profit is important (or required for the CEO to keep his job), not all money goes to improving the system, but to lining pockets of investors. So yeah, there needs to be a plan, but the current plan is keep things working and yield dividends to shareholders.
simpsond··on ‘This Did Not Go Well’: Inside PG&E’s Blackout Control Room
San Diego (SDGE) has a plan to bury most lines in the next 50 years. I feel like this would happen faster if they were not beholden to shareholders (NYSE:SRE). Distribution and the charges associated with it are government aided monopolies... Should a publicly traded company have a gov granted monopoly?
simpsond··on ‘This Did Not Go Well’: Inside PG&E’s Blackout Control Room
I agree that distribution should be gov regulated, and it is. I also agree that generation should be open market (it is, and those companies are still regulated by NERC, etc). That said, the distribution companies in CA are publicly traded... and that is a problem IMO.
simpsond··on ‘This Did Not Go Well’: Inside PG&E’s Blackout Control Room
Public utilities should not be for profit companies, especially public listed companies. They shouldn’t aim to maximize profits. If they were to instead maximize utility, they may re-invest in infrastructure more heavily and put power lines under ground. Maybe I am missing something and someone can offer a counter argument.
simpsond··on Fertility Fraud: Artificial insemination doctors who used their own sperm
PGS is offered as part of IVF protocols, but not required. There is some risk to damaging the embryo as there is a biopsy.
simpsond··on Air conditioner ‘in a patch’ provides portable cooling
Mini split systems are not cheap, but would allow you to keep your room cooler than others.
simpsond··on Search Benchmarking: RediSearch vs. Elasticsearch
"Elasticsearch crashed after 921 indices" ... Shards: "20 for the multi-tenant benchmark".. 921 * 20 = 18420. Shards have state; they have overhead. Why wouldn't they pick one shard for that benchmark? It's either intentional misconfiguration, or poor understanding of sharding.
simpsond··on Ruby's Creed
I also use and prefer safe navigation over the standard alternative. However, Maybe/Option monads are also nice. Perhaps that is what the author has in mind.
simpsond··on On whether changes in bedroom CO2 levels affect sleep quality
Vaisala makes good probes, acceptable for use in life science applications. They are expensive and you need an rs485 adapter for the ones I used. The serial protocol is nice and simple though.
simpsond··on Show HN: I taught my little brother JS, and he made this videogame in a week
I appreciate the minimalism of the game. It has the concept of progression down well. More captured blocks increases the speed of the red block, making the game more challenging as you progress. The friction of the movement makes the controls just the right amount of challenging.
simpsond··on Could Microsoft release a desktop Linux?
I've thought the same thing for a long time (10+ years, I must be wrong). It makes sense from a business perspective as well. I still think it will happen, but not sure when. The addition of Ubuntu shell was a pretty interesting move.
simpsond··on Crystal 0.27.0 released
I recently ported a fairly simple ruby project to crystal, and am happy with the result. I'm now writing another smallish project in crystal, and finding it quite productive. I like the syntax and language features of ruby, but I prefer static typing... so it's a nice addition. I'm glad to see crystal has momentum.
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