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onjectic

78 karma · joined March 4, 2021

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onjectic··on A solar gravitational lens will be humanity's most powerful telescope (2022)
From my layman understanding, yes, this concept should be bidirectional.
onjectic··on The mystery of why left-handers are so much rarer (2016)
Seems like the most useful would be the other way around.
onjectic··on How AlphaChip transformed computer chip design
First thing my mind went to as well, I’m sure this is already being worked on, I think it would be more impactful than even this.
onjectic··on Linus Torvalds says RISC-V will make the same mistakes as Arm and x86
"Just solve it in decoder" is a perfectly valid approach for now, and if this turns out to be unrealistic then they can go ahead and add a conditional move extension or whatever it is.

It’s far easier to add things to interfaces than remove them.

One mistake they have made that may bite them later is their compressed instructions extension. It takes up far too much of the instruction set space for the amount of utility it provides, even on microcontrollers in my opinion. It also introduces lots of edge cases around word alignment across cache and memory protection boundaries.

onjectic··on FBI Raids Big Corporate Landlord over Nationwide Rent Hikes
Retail for one, all under the mask of “AI”. Just google “pricing optimization software”.

https://www.trustradius.com/pricing-optimization

onjectic··on Biden signs TikTok bill into law, starting clock for ByteDance to divest
If I were China this is the move. I’m suspect this is the intention of the bill from the US end as well.
onjectic··on Lions OS: secure – fast – adaptable
Just as new to LionsOS as you are, but it has a much more permissive license, and it’s not dual licensed. I think this will make it easier for people to support the project.
onjectic··on From L3 to seL4: 20 years of L4 microkernels (2013) [video]
Here is a good conversation on this subject: https://wiki.c2.com/?CapabilitySecurityDiscussion
onjectic··on From L3 to seL4: 20 years of L4 microkernels (2013) [video]
The world runs on Unix and as a consequence, computer viruses, malware, spyware and ransomware are all common vocabulary terms. We traded this security away for nothing.

Linus Torvalds would have told you its system call performance, but Linux is also forced to solve these problems with things like futexes and io_uring, which carry over just as easily to microkernels.

Nowadays the excuse is side-channel attacks make any attempts at security pointless anyways so the kernel has exploded in size and complexity. This is insane logic, not least of all because side-channel attacks are read-only and can’t embed themselves into your system permanently through a bug in a browser JIT.

Linux is used purely because of all of its drivers and familiarity. Not on technical merits.

onjectic··on From L3 to seL4: 20 years of L4 microkernels (2013) [video]
It’s fundamentally full of concepts incompatible with capability based security principles, which are provably secure. Access control lists are provably insecure. POSIX resource management is archaic. It’s not possible to define “ownership” clearly on a Unix system.

You could certainly write a Unix abstraction layer on top of seL4, or more commonly treat seL4 as a hypervisor, but you would not be able simply use a Unix interface to interact with seL4 and get all of it’s benefits.

Capability based systems don’t magically carry their desired properties up the abstraction ladder, they have to be maintained and the designer has to be vigilant to avoid introducing ambient authority by using capability based design themselves.

Genode is an example of a layer over seL4 that follows these principles.

onjectic··on Rents are soaring. Is RealPage to blame?
Can you predict the stock market?

Just like the rent-market can have price manipulation, so can the stock-market and any other market. It’s absolutely possible for a trading platform to do this through price recommendations, and it would be illegal.

The two things being compared here are completely different though. It’s not very useful. Whats the real-life stock equivalent to RealPage? Who even rents stocks?

Additionally RealPage is forceful with its price “recommendations”. Imagine if a trading platform forced you to buy/sell a certain percentage of your stocks at their suggested rate, and file an appeal to opt out.

onjectic··on Rents are soaring. Is RealPage to blame?
Thats called a monopoly, and monopolizing intentionally is illegal for the same reasons.
onjectic··on Rents are soaring. Is RealPage to blame?
> Price fixing doesn’t work without coercion.

https://en.wikipedia.org/wiki/Price_fixing

onjectic··on Rents are soaring. Is RealPage to blame?
Collusion is just a tool, an illegal one, but a tool nonetheless. You say RealPage is magical, I think it’s just evidence of its control over the housing market, not clairvoyance. It self-fulfills whatever prophecy it comes up with. And these prophecies seem to always predict ever increasing prices(excluding high frequency noise), far above what the market would normally allow.

Renting is supposed to have risks, without these risks it probably wouldn’t even be allowed in modern society. Landlords are well within their right to find creative ways to mitigate them, but it can’t involve breaking the very same set of societal rules their tenants are following, there is nothing creative about that. If only criminals targeted criminals, but they always go after the easiest victims.

onjectic··on Peredvizhnikov Engine: Lock-free game engine written in C++20
Your right that there is no parallelization improvement, but it does not reduce parallelism either, its just a different(imo easier) way to think about concurrency.

Because it is easier for me to think about it is easier for me to see where things will contend the same resource and actually helps me improve potential parallelism. Once you recognize a particular opportunity where SMP can speed things up, you can stray a way from the actor-model a bit and have multiple threads receiving on your message queue, or if that isn't possible, you can just add more actors and split up the data better.

onjectic··on 200-foot-high lava fountains shoot into air as new Kilauea eruption begins
Probably lacking, volcanoes in Hawaii don’t typically erupt very violently, instead they flow steadily for a while and then quite down before going dormant again.
onjectic··on Using Google’s code history to write more code
I’m going to start calling all of my co-workers non-deterministic systems.
onjectic··on Gen Z Is Ticked Off About a Possible TikTok Ban. Beware the Fallout
Initially I was in favor of a TikTok ban, because I truly do believe its a bad thing being pushed by a bad actor(CCP) until I realized most justifications I could come up with can also be used to arbitrarily censor anything else deemed “unhealthy” or a security concern. For government employees, a ban makes sense, but for everyone else a ban needs to have the correct safeguards so that it cannot be used to further limit peoples freedoms.

And if the safeguards cannot be found, then there should be no ban.

So with all that said, this ban is so obviously just a vehicle to slowly erode peoples rights, it should be stopped, the title of this article is intentionally divisive. Not sure about its contents, can’t read them.

onjectic··on AI isn’t the app, it’s the UI
Its the user.
onjectic··on The magic of DC-DC voltage conversion
Well it actually is physically equivalent considering: speed * torque = power = voltage * current.

Switching voltage regulators are just gearboxes for electricity.

Maybe you could even say LDOs are kind of like brakes on a car, since they throw away energy as heat to regulate speed.

onjectic··on Bumble claims IP rights on employee's open-source libs
So this thread caused me to deep dive into California law, as I work on software projects at home and for a living.

From things I have read, yes, this exception is that broad. BUT then I did some more reading and happened upon this article which seems to say otherwise? https://www.natlawreview.com/article/employment-law-and-pate...

The key thing being California Business and Professions Code § 16600 which seems to be on the side of the employees. Can anyone more familiar with this stuff confirm my understanding?

onjectic··on Actual impostors don't get impostor syndrome
Having a very hard time not focusing on intrusive thoughts is a symptom of OCD.
onjectic··on Consciousness Is Just a Feeling
Consciousness is the ghost in the machine that seems to be unnecessary to the functioning and behavior of the machine.

All of your interactions with the outside world can be explained by the signals in your brain, even our discussion of consciousness can easily be explained by physical/measurable processes.

This conversation would still happen in a universe without any conscious entities . Of course you can build a machine that can recursively think about its self, and in turn speak about this self awareness. This should all be able to happen without there being a subjective experience of that self-awareness.

So why is anything experienced at all.

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