rzimmerman

7 ms·

31.
by rzimmerman 3y ago
I was vaccinated in 2020, had a booster in 2021, and the bivalent booster in 2022. There's no way to know with a sample size of one how well I personally was protected. I was definitely exposed several times to COVID and did not catch
32.
by rzimmerman 3y ago
I just had COVID for the first time. It's been two weeks and I still feel like total garbage. I'm thoroughly done being nice and pretending to be open minded about conspiracy thought at this point. If people want to "just ask
33.
by rzimmerman 3y ago
It's obsolete now, but before async/await was part of JS proper I worked on a compile-to-JS language that handled this by compiling to callbacks: https://github.com/rzimmerman/kal It included try/catch s
34.
by rzimmerman 3y ago
The TPM spec is a monster and I understand the urge to throw it out and create something simpler. It's also true that you're trusting proprietary firmware in the TPM to be correct. Errors and bugs in the spec are also near impossi
35.
by rzimmerman 3y ago
Absolutely. A lot of back-patting and inside jokes about 40 years of building expensive space systems that often failed. Self-aggrandizing crap about how “space is hard”. Space was hard in the 60s when you had to invent microprocessors to g
36.
by rzimmerman 3y ago
I’m fairly confident this is not a first. It’s just good behavior if you have a defunct but controlable satellite in low earth orbit. A best-effort burn to deplete fuel and aim for an ocean is an obvious choice. While it’s interesting, it i
37.
by rzimmerman 3y ago
This is already (effectively) the case. All satellites launched from the US need to have a plan to safely deorbit within 25 years after they’re no longer in use. I believe this was recently lowered to 5 years. For many satellites this just
38.
by rzimmerman 3y ago
I don't know the internals, so I'm guessing, but for password sync between iCloud devices Apple might require a hardware protected key (like in a TPM). In which case it does make sense that this requires a native process running o
39.
by rzimmerman 3y ago
There's a nice blog post from Planet about their approach: https://www.planet.com/pulse/keeping-space-clean-responsible...
40.
by rzimmerman 3y ago
This article is sensationalizing pretty hard. SpaceX is doing a great job automating conjunction planning. If you run a collision model on their 1000s of satellites over a several day period, you'll find many potential collisions (&quo
41.
by rzimmerman 3y ago
It is incredible to me how few people understand this. Particularly people with finance backgrounds that should know better. The June 2022 CPI showed an increase of over 1.2% (just in June!), equivalent to about 13% inflation at a yearly ra
42.
by rzimmerman 3y ago
I'd also plug an open source radio released by Planet (similar to what's on their Dove satellites): https://github.com/OpenLST/openlst https://github.com/OpenLST/openlst-hw https:/
43.
by rzimmerman 3y ago
Summary from what I read: Any user can query pretty much any table in the DB using their "GQL" wrapper around SQL. Someone thought enough to restrict the "user_password" field, so instead you query another table which gi
44.
by rzimmerman 3y ago
US power is really 240V with a neutral. It’s wired to most outlets and circuits as one 120V leg (against the neutral). But you can absolutely wire a 240V circuit using both legs and major appliances (air conditioners/heat pumps, electr
45.
by rzimmerman 3y ago
The argument is more complicated than Elon makes it out to be. "Humans can drive with vision alone => computers can drive with vision alone" implies computers can do anything the human brain can do. It's not a given, and i
46.
by rzimmerman 3y ago
I believe there is a correction for the onboard satellite atomic clocks, which run faster than ground/ECI clocks due to a combination of special and general relativistic effects. The correction is a simple one - they just calibrate the
47.
by rzimmerman 3y ago
I hate being a critic when someone actually does something, but I have a lot of trouble justifying the effort on this one as well. It seems like the mission did a great job of checking off some ESA goals. I'm skeptical these tasks were
48.
by rzimmerman 3y ago
Kids today will never know the joy of "On Error Resume Next"
49.
by rzimmerman 3y ago
It's hard to explain how much better the Tesla charging experience is to someone that hasn't tried both. As frustrating as the company (and the leadership) can be, the car is great and the charger network is outstanding. There are
50.
by rzimmerman 3y ago
Planet once used a Dove satellite to take a series of stills (that is stitched into a video) of a rocket launch of other Dove satellites. Video here: https://www.youtube.com/watch?v=afiLd4zPoLQ .
51.
by rzimmerman 4y ago
That's really interesting - so your payments are only fixed for 10 years (and at a lower amount, since it's interest-only)? I suppose you're betting that either: - You'll sell the house before 10 years - Rates will go do
52.
by rzimmerman 4y ago
I don’t think I’ve ever seen a mortgage that’s interest-only for a fixed time like that (but I’m not sure - I’m in the US). If you want fixed payments for 30 years the only way that works is if you pay less principal at the start. There’s m
53.
by rzimmerman 4y ago
I think that article is incorrect. The FHA is allowing modification of existing mortgages to 40 year terms to prevent default. Not new 40 year mortgages: https://nationalmortgageprofessional.com/news/fha-oks-modify...
54.
by rzimmerman 4y ago
It sounds like the privacy guarantees of “camera data isn’t linked to your ID” and “the interior camera data stays in the car” aren’t really useful if all the data is geotagged, given that these cars spend 70%+ of their time at the owner’s
55.
by rzimmerman 4y ago
Reminds me of a dumb project I did that takes a person's name and returns a name that is close, but not quite right: https://github.com/rzimmerman/shitty-autoreply The idea was to set up an auto-reply to my email
56.
by rzimmerman 4y ago
I think phrasing it as “30 minutes of light runnning” is a great way to explain it. A lot of people get turned off by “3 miles” or “5km” and it doesn’t account for slower paces. A great way to start is to commit to 15 minutes of run/wa
57.
by rzimmerman 4y ago
Also it’s not clear that the same AES key is used for all secrets. If it’s URL- or tag-derived using the master password then it’s only bad for long secrets (more than 32 bytes) that aren’t random data.
58.
by rzimmerman 4y ago
I also love my Model Y. It’s by far the best car I’ve ever owned or driven. But the software has stagnated in favor of “FSD” beta releases. Autopilot on freeways is great. I use it all the time and it works. I wish Tesla would focus on gett
59.
by rzimmerman 4y ago
This is great research and very useful (if sometimes mundane and math heavy!) work. It’s a public good and the author has made important contributions. I kind of chuckle that many of the comments here are complaining that the article didn’t
60.
by rzimmerman 4y ago
> code full of #ifdefs is not portable code - it’s code that has been ported a lot Definitely true - the more preprocessor magic you rely on, the harder it is to figure out what’s actually going into the compiler.

More ›