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Earw0rm

1,418 karma · joined August 9, 2021

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Earw0rm··on The discovery that changed how scientists think about memory
That's quite a leap. The idea that _semantic_ memories are encoded so as to be transmissible via blobs of neural tissue stretches plausibility.
Earw0rm··on The discovery that changed how scientists think about memory
AFAIK the gut in large terrestrial vertebrates has its own nervous system that rivals the complexity of the entire system in simpler creatures.

The idea that all stateful/regulatory stuff is entirely localised to the brain is a bit too simple to be true. Most of it, sure, but that last few percent can be doing all sorts of clinically important stuff. Nature is an incredibly brilliant engineer, but not always a tidy one.

Earw0rm··on The discovery that changed how scientists think about memory
Flatworms branched off our side of the animal tree of life very early on. They're on the same side as molluscs, some of whom (cephalopods) are famous for having a more distributed nervous system.

Granted though many/most organs are stateful and somewhat adaptive - in a sense they'll "remember" what happened. Even plants possess that to varying degrees.

Earw0rm··on xAI is looking more like a datacentre REIT than a frontier lab
And while there's no challenging the underlying proposition "AI has value", right now 95% of corporate users are still at the "throw everything at the wall and see what sticks" level in terms of model usage compute.

It's sheer brute force, tons of waste, seems like very little thought going in to fitting the implementation to the problem.

The value of compute can drop significantly in the event of users figuring out how to optimise for their particular need. And yep, there are wasteful applications that can burn whatever compute is available, but how much demand for that is there when it's properly priced?

Extreme example. Generating novel 4K VR video on demand. I'm certain there's a market for it, at $10/hour probably quite a healthy one, at $100/hour not so much.

Earw0rm··on xAI is looking more like a datacentre REIT than a frontier lab
It's ethnically rational, and morally right.

However.

It's not rational relative to the short-term incentives of a typical corporation or investment vehicle. PE, VC, fund managers aren't paid to give a fuck about the social contract. Literally not in their job description.

Earw0rm··on India's surprise baby bust
So I think you're right, but my diagnosis of the problem is a little different.

As in: _why_ does everyone want a middle class life? _why_ is only a middle class life that's seen as being dignified?

I've friends across a wide range of ages, from late 50s to mid 20s, and it's notable that the older ones have stories of some incredibly grimy circumstances from their 20s which today's 20somethings would be unwilling to endure, they'd rather stay at home with their parents. Living in squats, bedsits or mobile homes, sofa surfing for extended periods, etc.

Lots of people in previous times started families when they were flat broke. Some out of choice, some it just happened. Granted that's not ideal, but they made it work.

Earw0rm··on The Causes of Long Covid
Yep, we can measure ATP and so on at the cellular level, but we don't have much of a picture of how that maps onto the physical/psychological sensation of "energy".

Like we know at a crude physical level, we can give someone a bit of a boost with glucose and sympathomimetic stimulants, but sometimes it works a lot better than others. And it's ineffective for fatigue syndromes, but they can't be the other mechanical things commonly associated with fatigue either. (lactic acid, micro-tears and so on).

Earw0rm··on The Causes of Long Covid
Yep - people wonder why we can't treat ME/CFS, we don't even have decent biochemical markers for "fatigue" vs "energy", beyond trivial stuff like blood oxygenation and lactic acid. Nor are there much in the way of markers which will determine whether a competing athlete is going to have a good or a bad day.

For example, we have a concept of "energy" for which calories is a rough proxy, but there's no particular reason why fighting an infection should draw on the same reserves that running either endurance or peak muscle does, especially as most people operate in a state of calorie surplus, and their respiratory system is more than capable of supplying a bit of extra O2 unless they're severely ill. And yet clearly the immune/autonomic system forces people into a "rest" state in case of infection.

Or another one, there's no particular biological reason for older people to have less "energy". Like yes there's loss in muscle mass and some small drop-offs in the efficiency of various systems, but it doesn't seem like directly compensating for those makes all that much difference.

Earw0rm··on The Causes of Long Covid
"Cause" is necessarily a slippery concept in a dynamic system governed by feedback loops so complex that we only understand maybe 20%.
Earw0rm··on The Causes of Long Covid
Not necessarily fake. Mind/body homeostasis is WAY more complicated than that.

To use a computing analogy, which doesn't map perfectly onto the body, if consciousness awareness is userland, you can have things go wrong which are localised in ring 0 - brain drugs will be to some degree effective on those, that doesn't mean it's fake or made up.

In reality there are fuzzy boundaries and feedback loops everywhere. SSRIs treating this isn't any more mysterious than NSAID painkillers being somewhat effective for acute depression.

It's probably a whole set of feedback processes that get screwed up, hence the panoply of symptoms, inserting a hard stop into one part of the loop can be enough to kick the system back into a better functioning state.

Earw0rm··on The Causes of Long Covid
Perhaps because it involves immune system dysregulation.
Earw0rm··on A sleep-like consolidation mechanism for LLMs
Sleep is more common across the tree of life because it's older.

Older than bilateral symmetry even - jellyfish are thought to sleep, sponges however do not. Jellyfish don't have spinal columns, lungs, gills, livers, kidneys, hearts, guts or blood, but they do have nerves and they do seem to sleep.

There is widespread consensus as to which processes failing will kill you first in acute liver failure, but it governs dozens of processes that, medium term, are essential to life; not all are widely understood.

In the case of sleep, it seems to be nervous system dysregulation that kills. It's notable that comatose patients don't seem to suffer the ill-effects of sleep deprivation. But still, "the thing that kills an animal subject to extreme sleep deprivation" is not necessarily "the original process for which sleep was evolved".

Human brains do some fairly complicated vital things during sleep (REM, spindles, slow wave activity), but that can't be the original essential function - the simplest animals that sleep (jellyfish) don't really have brains, although they do have nervous systems.

Whereas those animals which lack nervous systems (sponges) can't be said to sleep, although it's reasonable to ask.. "how would you tell?", or ask whether the question itself makes sense for something that lacks the ability to sense, plan, act.

So another framing is "anything which can be awake, must also be asleep". But one might equally argue, we don't know why animals are awake.

We can go one step further and suppose that, in order for an animal to act, to exercise will, it must do so at above its average metabolic rate, and in doing so it necessarily incurs metabolic debt.

Earw0rm··on The dead economy theory
In that scenario, the AI owners become rentiers - able to charge as much as the market will bear for brokerage - and everyone else gets to offer their services via said brokerages, which charge the customer the most they can bear, and pay the worker the least.

Any economy of scale - which is, in a way, what allows knowledge economies to exist at all - will accrue to the middleman.

Good news for those able to master manual, craft skills to a degree most cannot. High-end tradespeople, specialist installation technicians and so on. Bad news for everyone else besides rentiers.

Earw0rm··on I Am Retiring from Tech to Live Offline
What's worth stealing, to a dude with a robot?

Chances are, whatever it is won't be found in a regular residential property.

Earw0rm··on A sleep-like consolidation mechanism for LLMs
My point is that, in a higher organism, it may be essential to how a lot of their processes function, in that it was infrastructure that already existed at the time those processes were developed, so they were in turn developed to depend upon it.

So "the reason it originally exists" and "what breaks if you take it away" aren't necessarily the same thing.

As with, say, digestion, or an major organ like the liver, it's reasonable to think that it does simple things in simple animals, and more complex things in more complex ones.

Take out an animal's liver, it's not one process that stops working, it's dozens. There's one or two that will kill it quicker, so those are the ones it dies of, but artificial livers are hard to build as they implement so many vital processes.

Earw0rm··on A sleep-like consolidation mechanism for LLMs
Probably because it evolved very early (like before bilateral symmetry, multi layer body cavity, or kidneys early... maybe even before multicellular animals early) and so has been incorporated as an essential pillar into multiple processes layered on top of that fundamental architecture.
Earw0rm··on The Eternal Sloptember
"If you pay 3x more for your appliances (TV, dishwasher, oven, etc...) you don't get something 3x more reliable/better engineered."

You do at the bottom of unregulated markets. For dishwashers and ovens, safety regs generally impose a high floor on the market. There is no $40 oven, because it's physically impossible to make a safety-compliant oven for $40. If it weren't for market regulation, $40 death-trap ovens would be a thing for sure.

The very cheapest compliant unit isn't _much_ worse than a mid-market unit, it might be a bit flimsier and wear out sooner; high-end luxury units aren't much better than mid-market units - because there's not much innovation driving progress at the top end. AEG and Bosch are still generally solid engineering, but there's not much point in paying more than that unless you like the aesthetics.

Mercedes and BMW - small-volume performance models aside - are like the big fashion brands, Vuitton etc., they're selling the idea of luxury to people who aren't even nouveau-riche, more like borrowing money to cosplay loudly as nouveau-riche. Compare old 1970s Merc convertibles with today's, the modern ones are just kind of ugly, aggressive and sad.

ADAM Audio loudspeakers are pretty good or were last time I bought a pair. They're designed as studio monitors but great for listening too. Perhaps they've gone downhill since being bought by a listed company a few years ago?

Earw0rm··on The Eternal Sloptember
Seems we've fallen straight back into false dichotomy land.

In that there are a dozen shades of grey between "fully-automated, no humans assembly line" and "person using only hand tools maintained by hand". Tools _are_ machines, are technology, they've just been around so long we forgot that industrially forged steel needs an industrial steel forge.

Probably the best quality product you'll get is from a person who cares, sourcing materials they care about, working with it using their expertise and discernment, and using the most effective tools to get the job done - most, but not all of which will be power or machine tools.

But the point is that the human needs to direct the machines - sometimes that's just a thinking task, and sometimes it's a bunch more physically hands-on.

Earw0rm··on Heritability of human life span is ~50% when heritability is redefined
Which then begs the question, what is IQ actually measuring - something more like innate intelligence, or a fairly big slice of learned, habituated test-taking ability?

Regardless of what underlying trait it's actually measuring, the habituation factory is a big component of its supposed bias - that is, has your background taught you the kind of problem-solving habits that will help you to post the best possible score?

Earw0rm··on Heritability of human life span is ~50% when heritability is redefined
Or are smarter people better able to regulate their food intake? (Either innately, or because society gives them other privileges which makes them less likely to overeat)
Earw0rm··on When Dawkins met Claude – Could this AI be conscious?
It may be helpful here to think about, at what point does a sense of self, of varying degrees, become evolutionarily advantageous?

An animal that doesn't have some kind of pair bond or social arrangement, and doesn't raise its young, has a lot less need for some of this emotional hardware than we do.

Whereas K-selected species that raise their kids have broadly the same need for it as humans.

That doesn't categorically mean it evolved with the first pair-bonding K-reproducer, or that birds have parallel-evolved emotional hardware like ours, but there's plenty of behavioural evidence there - the last common ancestor of birds and humans was small-brained and primitive, but investing in individual children probably evolved around the time of amniote eggs, just because they were so much more biologically expensive to produce than amphibian or fish eggs.

Earw0rm··on Maladaptive Frugality
When you actually get to drive it as it can be.

Maybe you live somewhere that's possible, or not too far from such a somewhere. Rare to find such places within 50 miles of a big city though, unless you're in Germany and have the autobahn.

I suspect most premium cars get to spend a tiny fraction of their mileage doing the kind of driving where they'd measurably beat a mid-market model.

Earw0rm··on Sawe becomes first athlete to run a sub-two-hour marathon in a competitive race
How far are you running total, both per run and per week?

Running will absolutely help your health, but on its own it's unlikely to get you thin. It's hard to burn enough to make a big difference without it chewing your body up in other ways - especially if you're overweight and out of condition to begin with, and so a bit more susceptible to injury than skinny runner types.

Thinking of it as a calories in/out equation is counterproductive for most people, if it boosts your cardio health, gets you more active and maybe converts a bit of body fat to leg muscle, that on its own is a win.

Certainly no harm in having a swig of Gatorade every couple of km if it helps you go further, anyhow.

Earw0rm··on Sawe becomes first athlete to run a sub-two-hour marathon in a competitive race
Kejelcha is 6'1" and under 130lb.

What fat stores?

Earw0rm··on Why has there been so little progress on Alzheimer's disease?
The brain is a dynamic system, and a poorly understood one at that. It relies on active processes in order to not degenerate (likely the main reason why sleep deprivation is eventually fatal). Science is still some way from cataloguing all the processes involved, never mind fully understanding their workings.

Alzheimer's isn't a single-point-of-failure disease, more like a dysregulation of maintenance. So there are lots of things that can tip the odds one way or another, and we may get a lot better at prevention - to the point of reducing incidence maybe five-fold, or delaying its symptomatic onset to beyond the relevant lifespan - but the idea that there might be a single "cure" seems like wishful thinking.

It may also prove to be that, like a spinning-top, once things start to go off-axis it may be very difficult to restore the original stable state, and at most we can just slow it down a bit.

Perhaps more uncomfortable, if most of the effective interventions, risk-reduction-wise, are social/lifestyle related, that has implications for whether people have the agency to access those things.

(Time/energy/facilities/resources for exercise/active lifestyle being an obvious case in point, which is already well known to have a moderate protective effect).

Earw0rm··on Why has there been so little progress on Alzheimer's disease?
And as with a lot of cancers, it seems to be perturbation of a dynamic system rather than a single, mechanistic cause.

Think of it like brushfire in an ecosystem, or species population imbalances leading to catastrophic breakdown. These are better understood in terms of system state and preconditions, as opposed to a trigger event.

Infectious disease, at least in the classic acute form (whether that's bacterial and fast - cholera - or viral and slow - HIV), is a more mechanistic process which can be halted by blocking a single step in its pathway.

Systems that remain healthy and balanced via dynamic processes are harder to reason about and fix, because the root cause of a disease state can be dozens of little things adding up to the system losing its ability to maintain homeostasis.

Earw0rm··on Habitual coffee intake shapes the microbiome, modifies physiology and cognition
That's normalising clean-ness (i.e. the state of being free of all psychoactive chemicals) perhaps too much.

The original humans adapted to a wide range of diets across the world (one reason why we're such a successful species), but most groups seem to consume mild psychoactives a lot (it's hard not to, so many wild plants have some level of activity) and seek out more powerful ones occasionally and for specific situations.

Earw0rm··on OpenClaw isn't fooling me. I remember MS-DOS
MSDOS and similar single-user OS were not originally designed for networked computers with persistent storage. Different set of constraints.
Earw0rm··on The future of everything is lies, I guess: Where do we go from here?
I'd argue that's /because/ we regulated aviation (and also some annoying physics limitations), so we never had the option of becoming fully dependent in the way lots of places have on cars.

Less than a century ago, so within living memory (albeit only just), literally nowhere on Earth was car dependent.

Earw0rm··on The future of everything is lies, I guess: Where do we go from here?
Yes, if such places are plentiful. It's a messy situation where revealed preference (house prices in walkable areas, Amsterdam and Paris increasingly full of rich young Americans) vs immediate consumer choice (more cars! More convenience! Oops, now we need to flatten downtown for an elevated freeway...) tend to give conflicting answers.
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