knightly
@knightly@pawb.social
- Comment on Bluesky’s Quest to Build Nontoxic Social Media 1 week ago:
I did, I do, and I’m calling this article bullshit for not pointing out that while the protocol might be open-source, they have yet to share the server software that’s required to operate it.
BlueSky “lets” people host their own profile data because it reduces how much data they have to host. It does not allow them to login and browse the network without going through their centralized servers to do so.
So, it’s not really decentralized, not really open source, and remains under corporate control until such time as they decide to let anyone compete with them on their own network.
- Comment on Trump told Republican senators he’s open to raising taxes on highest earners 2 weeks ago:
The poor guy’s brain must have the consistency of pudding by now.
- Comment on How wil people react if Trump is right about Tariffs? 2 weeks ago:
Tariffs are normal, they encourage a strong local economy that doesn’t get screwed over by a dominant economy that decides to use the trade relationship against the local economy
But America was that dominant economy, right up until the tarrifs were imposed. Now it’s more like we’re brexiting ourselves.
- Comment on PUT. HIM. BACK. 2 weeks ago:
One hundred and thirteen times a second, nothing answers and it reaches out.
- Comment on What are people from Moscow and Versailles called? 2 weeks ago:
Muscovites and Versaillians.
- Comment on trapped in the middle with u 2 weeks ago:
So you do have a minor misconception there in that first paragraph, time dilation is relative. The slowdown of something falling into a black hole is seen from the perspective of a distant observer, the thing falling in sees the outside universe running in fast-forward during the fall toward the horizon. Neither is losing energy, the extreme curvature of spacetime stretches out the light moving outward and compresses it in the other direction.
As to whether any particles can catch up to each other beneath the event horizon, our best theories suggest it is indeed possible. The steeply curved spacetime beneath the event horizon should still include valid paths where particles thrown in at an angle will intersect with each other as they spiral in. Velocity is relevant too, something that dives in at 99% the speed of light should be able to catch up to something that was dropped from a relative standstill just above the horizon.
- Comment on trapped in the middle with u 3 weeks ago:
It helps a bit if you think of time inside a black hole like an onion. The outer skin is the event horizon where information about the moment the black hole was created is “stored”. Going deeper leaves that past behind you and surrounds you with more recent light, and each new layer is smaller than the last because there’s less past to pass through between the moment the black hole was created and the moment you fell in. The singularity is the point at the center where there’s no more past left to see but future light can reach you from all directions.
- Comment on trapped in the middle with u 3 weeks ago:
That depends on one’s position on the path from the event horizon to the singularity. At the event horizon you’ll pass all the outward-pointing photons that were emitted the instant the event horizon formed, making all of “down” impossibly bright. Deeper, the only light that reaches you from “down” is light that entered the black hole at an angle and looped around the singularity before you caught up to it, creating a ring of light around an circle of absolute dark. That ring grows thinner and the black circle expands as you get closer to the singularity.
Photons from above have the opposite appearance, with an expanding ring of blackness around a contracting circle of incoming light paths.
- Comment on trapped in the middle with u 3 weeks ago:
As far as we can figure it, basically, yeah. Wrapping your brain around the concept
So gravity gets stronger the closer you are to a black hole, but at the event horizon things get weird. The extreme curvature of spacetime forces space itself to flow toward the singularity at its center faster than the speed of light, so on the inside there’s no “other” direction to point to, even photons emitted straight “out” can’t reach the event horizon and end up moving in the same direction as everything else. So space becomes timelike, proceeding inexorably from point A to B.
Time is more complicated, because it’s really hard to visualize. If you fall into a black hole, you’ll pass through all the outward-pointing light that’s been failing to escape since the event horizon formed, which puts all the past history of the black hole below you. Meanwhile, anything that falls into the black hole in the future can be seen above as its downward-pointing photons catch up. The entire timeline of the interior evolution of the black hole is laid out in the light coming toward you from either direction, making it spacelike.
- Comment on trapped in the middle with u 3 weeks ago:
Okay!
Entanglement is what we call any sort of quantum interaction that causes some property of two particles to become linked, like photon gun that always spits out two photons of the same polarization, or bouncing a couple of molecules together so that they spin in opposite directions. So long as nothing comes along to disrupt that state, we could measure one particle and we’d know the state of the other particle no matter where it is without having to measure it.
The “inexplicable connection” there is just information about a quantum pair, but it’s spooky because that information literally doesn’t exist until it is measured, at which point the connection is broken. A couple of intergalactic hydrogen atoms could exchange a photon across light years and become entangled for the rest of time, casually sharing some quantum secret as they coast to infinity.
Bonus answer, I think time is real but isn’t like what we imagine it to be.
- Comment on trapped in the middle with u 3 weeks ago:
Heck, I love explaining quantum physics.
Ask me questions! I can dumb it down enough that even a child can understand!
- Comment on Today's Survey. One point for everything that you have NEVER DONE 3 weeks ago:
0, and I’ve done 4 of these in the last year.
- Comment on Imagine 4 weeks ago:
Good for them.
What’s the issue?
- Comment on Keep it going. 4 weeks ago:
Him in a kigu trying to get involved in the furry community was peak cringe.
You know you’re a piece of shit when even the worst furries in California won’t have anything to do with you.
- Comment on 3's grip looks the most comfy 4 weeks ago:
None of these are fountain pens, the obviously superior choice over ball-points.
- Comment on Revolt's language options 5 weeks ago:
I’d presume the check mark means the language pack is available locally and the warning sign means it’s probably missing some localization strings.
- Comment on What are the democrats actually doing to help? 1 month ago:
Pretend they are Republicans and start breaking the rules.
- Comment on place yer bets 1 month ago:
You’re not wrong, but something like this is well within the capabilities of private companies like ArianeSpace or SpaceX. Also, the stakes are just a city-killer asteroid, failure is entirely an option when there’s plenty of time to evacuate the impact zone.
- Comment on place yer bets 1 month ago:
In short, we already have a plan. DART proved that we can do it, and off-the-shelf rockets like the Falcon 9 have plenty of performance. All that remains is to wait until early 2028 when we get a proper fix on the asteroid, then we’ve got 7 or 8 months to prep and launch a mission before the window of opportunity closes.
- Comment on place yer bets 1 month ago:
Well, yeah. Deflecting an impact that’s scheduled 4 years in the future wouldn’t take much force and we did it once before with the DART mission. We can just do that again in the months between when the asteroid comes back around and when it flies past us.
- Comment on place yer bets 2 months ago:
We’ll get a better idea of whether it’ll hit or not in 2028 the next time it passes close to earth, which will give us plenty of time to respond before it might hit in 2032.
- Comment on How does this pic show that Elon Musk doesnt know SQL? 2 months ago:
Seems to me that the most generous interpretation would be the preponderance of Oracle’s DBs in the government, and Musk being pedantic since they aren’t literally called SQL like MySQL, MSSQL, or PostgreSQL (even though they all fall into that category).
- Comment on In the 1985 movie Teen Wolf, when Scott Howard turned into a teen wolf, would he have had a human penis or a wolf penis? 2 months ago:
Yes.
- Comment on How does this pic show that Elon Musk doesnt know SQL? 2 months ago:
Not unless the data associated with that SSN is itself inconsistent.
For example, when multiple people are fraudulently using the same SSN, the fraud monitoring DB would neccessarily need to record several entries with the same SSN.
- Comment on How does this pic show that Elon Musk doesnt know SQL? 2 months ago:
Indeed, that’s a possibility, but I’m not privy to the structure of the social security administration’s databases so I couldn’t say if it was indeed the case.
- Comment on How does this pic show that Elon Musk doesnt know SQL? 2 months ago:
To oversimplify, there are two basic kinds of databases: SQL and noSQL (“Not Only SQL”).
SQL databases work as you’d imagine, with tables of rows and columns like a spreadsheet that are structured according to a fixed schema.
NoSQL includes all other forms of databases, document-based, graph-based, key-value pairs, etc.
The former are highly consistent and efficient at processing complicated queries or recording transactions, while the latter is flexible and fast at reads/writes but not neccessarily consistent.
All large orgs will have both types in use for different purposes; SQL is better for banking purposes where consistency is paramount, NoSQL better for real-time web apps that need minimal response times and scalable capacity.
- Comment on My German is a little rusty, but... 2 months ago:
Counterpoint:
- Comment on [deleted] 2 months ago:
Second one I tried:
- Comment on [deleted] 2 months ago:
Try typing the URL into your web browser.
- Comment on [deleted] 2 months ago:
You leave your current instance and go there instead.
