Alien pocahontas
Using Grok to develop Grok... This sounds like Model Collapse with extra steps.
Yup. From the outside, it's been reasonably obvious since 2007: The current system isn't working, and the ones who offer to change things are the ones who will actually get the votes.
This became even more apparent post-covid: Biden offered a return to normalcy, while Trump wanted to "fix everything". You can say what you want about Trump (and I will probably agree with most of it), but he offered something else than the same old neolib system that has failed more and more people every year.
The problem with today's mainstream politicians is that one side tries to return to Obama era "middle ground" policies while the other side can be summed up by this shamelessly stolen comic:
A sensible politician who wants to win an election needs to understand that "the middle ground" no longer means not stepping on toes. The middle ground these days means shaking up the current system to provide basic necessities for those who have been ignored for decades. People turn fascist for the same reason people turn tankie; when you're starving and someone promises all the potatoes you can drink, of course that sounds better than the current situation.
I truly hope Mamdani or someone like him gets to appear as more than "ermagerd scary communist" to the right side, because I'm sure most of those who would insta-hate "The left" actually can get behind a lot of the actual policies once they get beyond the politics.
I'm all for rainbow-rights, eco-friendly living, and diversity, but most peoples priorities are a lot more immediate: putting food in the table. Let's all hope the DNC realizes this.
Is this when Homer learns Marge is pregnant? (the first time, judging from how much hair he has)
Not that I recall, but I feel you have a story you're not telling us?
I use Revanced, and I still get the occasional ad for premium. It makes me chuckle out of pity every time.
Those are directory listings. They are the default in apache2 (maybe others as well... I only know apache2), unless disabled or disallowed in the configs (enabled and allowed by default). If the directory you're accessing such as http://192.168.123.123/somedir/ does not contain a default file, such as an index.html, the directory list will be served instead.
Depends what you're after, really. If you want absolutely no extras, economy at budget airline is probably fine.
I've flown enough to prefer the "normal" airlines for what is included: yes, I need to bring a carry-on. And yes, I have checked luggage in addition to that. Sometimes several. And some of them are often heavy as fuck. No extra charge at a normal airline.
At a budget airline, anything beyond getting you and only you from A to B is an extra, and extra services carry a cost. And I absolutely detest the paperwork involved in filing an expense claim.
Also, when I'm flying, I'm either flying to work and want to arrive well rested, or I'm finally on my way home and can finally unwind. For these reasons I prefer to chill in a lounge during my connection, and/or upgrade to business class on the longer flights. Budget airlines usually don't have any of those as an option.
As far as I can recall, I haven't been left to fend for myself by a budget airline delay cancelation, at least not to a significant degree. But whenever something unexpected happens with the normal airline happens it seems they always have a good routine in place to make sure everything is taken care of, including rebooking, sorting out any connection complications, overnight stay at a proper hotel. Previous time this happened I got to pick any flight the following day that worked with my schedule, as opposed to being shoved into an early and really inconvenient one.
Tror vi har to mer elns. Det var i hvertfall slik for en god del år tilbake.
My cats would love the middle one
Years ago, my mate and I stole one, took it into the forest, and used it as a grill during the summer. Which alignment does that make us?
...which allows for some nice plots when you're at semi-synchronous orbits. Can't wait to position site survey (spy) satellites this way:
Bright green is current orbit. Darker and more faded greens for subsequent orbits.
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From Gravhoek on Discord:
For anyone interested in how RCS control works internally, I thought I would post a couple shots of its "brain" during a maneuver.
If you have some familiarity with how automatic controls work you've probably heard of PID - that's not how this controller works. The problem with PID is that it doesn't handle actuators (RCS jets, in our case) that have a "minimum impulse" very well. That is, you can't fire an RCS thruster for an infinitely small amount of time. In practice, this means every correction you make is always at least a slight overcorrection, which means you're going to have to accept a bit of "wobble" around your target.
To handle this without constantly firing back and forth and wasting fuel, you need what's called a "dead band" where you just coast and allow your pointing angle to drift away from your target angle a little bit. Then, when you get too far away, you make a small correction and drift back the other way. When you end up in this pulse-drift-pulse cycle around your target and the pulses are minimum pulses (meaning the smallest possible RCS firing time), this is called a "limit cycle", which we will see in this graph.
The graphs here display something called "phase space", which is a general term in control theory. For our purposes, it is a graph of two errors - error being the distance from your target state to your current state. The two errors we care about for each axis are angular error (the X axis) and angular rate error (the Y axis). Basically, how far you are from the target and how fast you are going relative to the target.
The big red dot on the graph is your current location in phase space. The lines on the graph are called switching lines - hence why this is called a "switching line controller". If you are below the lines, it means you need to increase your angular rate. If you are above the lines, it means you need to decrease your angular rate. Between the lines is the "dead band", where all thrusters are off. You can see the lines converge towards zero rate and zero angle at the center, which is why this controller guides the spacecraft to its pointing target.
The three images here show a complete maneuver.
- The initial angle offset where the red dots are far outside the lines.
- Mid maneuver where the red dots are inside the lines but we are rotating around towards the target. This is the coast phase where we are spinning but there are no thrusters firing.
- The "on target" phase where errors are close to zero.
Once you get close to the origin (zero rate, zero angle), the shape of the lines change into the squarish structure you can see on the zoomed picture. Here you can see several things more clearly:
- The yellow lines are the switching lines described before.
- The green line is the target line - when you are outside the switching line, you try and fire thrusters to hit this target line.
- The gray box shows the expected "limit cycle" - the path you expect to take if the spacecraft is doing the least amount of work possible to keep the target within the dead band.
In the video you can see what the limit cycle looks like in practice. Note that the thruster firings in pitch and yaw are slightly coupled (e.g. firing in yaw causes a small change to pitch rate). This is because the thruster pods on the Apollo CSM are slightly rotated around the vehicle, so e.g. the "yaw" thrusters are actually "mostly yaw and a little bit of pitch" thrusters.
Note: The referenced video doesn't want to embed. You can see it here.
Posted by Dean Hall this morning.
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Pearl Harbor. 5 minutes of cool CGI, rest of it being absolutely forgettable.