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Cake day: June 18th, 2023

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  • This comes up on every one of these articles. The astronauts are in no way stranded.

    There’s a common sense operating rule on the station: every person on board ISS must have a dedicated seat in a ride home that is ready to undock and leave within 30 minutes notice.

    Right now, the Starliner capsule is certified and ready for that role for the two test pilots. The crew dragon and soyuz are docked to handle the rest of the station crew.

    Earlier today there was an emergency shelter event on the station when some debris got unusually close. In this type of event all crew evacuate to the escape spacecraft and close hatches. So if something does hit the station, it’s less likely someone gets hurt during a depressurization.

    Starliner served as an emergency shelter for this exercise, because it is certified for emergency reentry, and the five identified helium leaks are not close to preventing it from returning safely.

    To get from ISS to a landing site requires no more than 5 hours of RCS operation. There is plenty of margin in the helium system to cover 5 hours.





  • To be clear: to get back to the ground safely, the spacecraft RCS has to operate for no more than about five hours.

    As far as I know, this spacecraft is still certified for emergency reentry, and if they needed to, the crew can get in and leave at any time. And they have good confidence that the spacecraft will get them to earth safely.

    These delays aimed at getting more data to justify certification as an operational vehicle instead of flight test. If it doesn’t work out, the worst case seems to be that a second test flight may be required.

    Delays don’t really cost NASA anything either. There’s plenty of consumables on the station for the crew, and when the capsule is docked the RCS can be shut down so it doesn’t leak.


  • The wrinkle in this case is that the thumb print giver was in parole. The conditions of parole stated that failure to divulge phone pass codes on phones could result in arrest and phone seizure “pending further investigation”. The parole conditions didn’t say anything about forcible thumb print taking.

    So the logic here seems to be:

    • If he had agreed to unlock the phone then the result would be the same.
    • If he refused to unlock the phone, that is a legitimate grounds for arrest. Fingerprinting is a routine part of being arrested, so there’s really no harm if it’s done on a phone in a patrol car. Either way, the result would end up about the same.






  • Let us all remember that, at least back when it started, the establishment alternative to systemd was a product named after its original operating system, System V UNIX, which is a direct descendent of the original UNIX from AT&T. This sysvinit software used complicated shell scripts to manage daemons. Contrary to some opinions, these shell scripts were not “just working”; they were in fact a constant and major maintenance burden for Linux distributions. When I started on Linux at least, Debian had a suspiciously large fraction of bugs on init script breakages.

    All this is to say that the new system, systemd, doesn’t have to be anywhere near perfect to be worth replacing sysvinit.

    People argue that systemd is rejecting the “UNIX philosophy” of small tools that do one thing well. I argue that this UNIX philosophy is not some kind of universal good with no tradeoffs. It’s an engineering rule of thumb. There are always tradeoffs.

    People argue that systemd is too much like Windows NT. I argue that Windows NT has at least a few good ideas in it. And if one of those ideas solves a problem that Linux has, Linux should use that idea.



  • A big part of WWI is that the web of treaties and alliances were all secret, as in classified information by each country.

    NATO is not a secret. The membership roster and terms and conditions are known to all, including potential adversaries like Mr. Putin. This has a major effect on stabilizing international relations because nobody has to guess what NATO would do.

    Despite his rhetoric, we know that Putin understands how NATO works, because he has been pulling materiel out of Kaliningrad. This leaves the Russian exclave extremely vulnerable to an invasion from NATO territory. But Putin is not worried about that, probably because he actually trusts NATO to follow the NATO charter.