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roceasta

297 karma · joined July 3, 2017

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roceasta··on Five-Year-Olds Can Learn Calculus (2014)
>Learning the time tables for example - you just have to do lots of exercises to get used to multiplying. No way around that.

Learning how to perform mental arithmetic with the aid of pencil and paper was a way to escape from the grind of farm work. One could get a respectable job as a clerk. However with the advent of electronic cash registers and smartphones a way around this later form of grind has also been found. So no need to make it compulsory. Which isn't to say that people don't choose to practice specific things they personally consider useful. Even gamers do that.

roceasta··on Five-Year-Olds Can Learn Calculus (2014)
The fact that school math is thought to be 'scary' and 'hard' is not the issue. Plenty of video games are known to be scary and hard. For instance, they contain monsters and are difficult to complete. They even have objective grades (scores).

What makes the difference is that video games aren't compulsory. So they represent true play. Which is what makes them educational, unlike a school curriculum, however much it is tweaked. Well, until something more fun than video games arrives on the scene...

roceasta··on It’s Okay to “Forget” What You Read
>So read always from authors of proven worth [Seneca]

Absolutely. The few authors that I love the best are streets ahead of the rest. Reading other authors is for me really just a search for the Next Big Thing. As time marches on, re-reading old favourites rises in value relative to reading new stuff, on average.

>Though our eyes may pass over all of the words and our hands may flip through all of the pages, what we read is never the entire book

The idea that reading is encompassed by the eyes zig-zagging down the page like a raster scan is an example of the 'bucket theory' of the mind, as Karl Popper put it. This is where knowledge supposedly pours into the brain passively via the senses. Which is a fallacy.

>If I read for pure pleasure, what harm is there in forgetting?

This is also the reason I've never seriously tried to speed read. Perhaps I'm mistaken about this, but why wolf down an expensive meal? There's nothing to be lost from optimising pleasure since it derives from the meaning i.e. from the true content.

>When we read, certain notable phrases, concepts and ideas [...] stand out more clearly from the others.

Oh yes. This is the Searchlight Theory of the mind, where our attention is continually homing onto the most interesting or semantically useful bit of whatever we are doing.

roceasta··on Is Romantic Desire Predictable? Machine Learning Applied to Initial Attraction
So parents pick suitors and daughters have the power of veto. That way parents filter out bad boy thugs (who may damage her face) and those of lower economic/social classes (who may reduce her to penury). Daughter filters out people she finds repulsive. The traditional model as I understand it.
roceasta··on Anil Seth: Your brain hallucinates your conscious reality
Row, row, row your boat gently down the stream, merrily merrily, merrily, merrily life is but a dream.

A dream with error correction. When error correction is faulty due to being irrational, or asleep, or on certain drugs, all sorts of strange things appear.

https://www.youtube.com/watch?v=Pr8s-K_TPCU#t=22s

roceasta··on Impact of breast milk on IQ, brain size and white matter development (2010)
Well I would tend to agree but I think in many cases the alternative wasn't mother's milk exactly but that of a wet nurse. Perhaps they thought this was a vector for infection.
roceasta··on The Accidental Elitist: Academia is too important to be left to academics
Sure. But bear in mind that all these benefits existed in the 60s, 70s and 80s, before the higher education bubble. When there was no web and little or no student debt. Yet there are more people in higher education now.

Heavy drinking and radical indoctrination are optional

They're notionally optional but don't underestimate the effects of social pressure.

In fact, conformity prevails strongly on the academic as well as the social side of university life. People talk about discussion and perspectives but in practice they want and expect accredited professionals to conform and to believe the same things. We don't generally want our doctors, for instance, to be original and creative. (Whereas, by contrast, we can have real discussion here.)

Students want to know whether a given topic will be in the exam or not, and what the right answer is. In the arts/humanities, where fashions tend to prevail, they try hard to give approved answers in original or disguised form. I suppose this isn't surprising, historically speaking. The first universities were religious institutions founded to train priests, to inculcate doctrinal uniformity, stamp out heresies, and so on.

If we judge the rationality of institutions by whether they meet the problems they purport to address then by that standard universities are pretty irrational. In fact I think one of the main functions they serve isn't mentioned very much: getting the kids to leave home.

roceasta··on The Accidental Elitist: Academia is too important to be left to academics
I find it almost incredible that while the motivated autodidact can learn almost any theoretical topic for almost no money via the internet we simultaneously have millions of students getting into heavy debt at university. (Also into heavy drinking, exam pressure, mental illness, radical indoctrination, etc.)
roceasta··on Impact of breast milk on IQ, brain size and white matter development (2010)
The truth isn't obvious. In the 1930s, 1940s, 1950s, it was 'obvious' to many people including doctors that bottle feeding with evaporated milk or formula milk was more scientific, more hygienic, and better all round.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2684040/

>By the 1940s and 1950s, physicians and consumers regarded the use of formula as a well known, popular, and safe substitute for breastmilk. Consequently, breastfeeding experienced a steady decline until the 1970s (Fomon, 2001)

roceasta··on Impact of breast milk on IQ, brain size and white matter development (2010)
The work of Karl Popper suggests than human knowledge also progresses in an evolutionary manner, by conjecture and refutation. So something resembling natural selection must be going on in our brains.

http://www.the-rathouse.com/CRContents.html

roceasta··on What We Get Wrong About Technology
Why not unbundle the task and give the conscious thinking to the computer, and the mindless grabbing to the human?"

Reminds me of Daniel Dennett's example of the coffee machine that both makes the coffee and drinks it for you.

that thinking is joyful, fun, glorious

Couldn't agree more. Thinking is the only place where we can be truly free.

not laborious or error prone.

No, mistakes are inevitable. This is actually not such a bad thing because if we weren't capable of committing errors then no progress would be possible.

roceasta··on Terry Pratchett's unfinished novels destroyed by steamroller
What's the opposite of a Pratchett novel? If it were a matter of losing this then Pratchett fans and experts would presumably not mourn. However now consider the case of an almost-but-not-quite Pratchett novel. Though this is not-a-Pratchett novel, it is deceptively and misleadingly not-a-Pratchett novel, because it still resembles one. It therefore stands the greatest chance of leading fans down the garden path and distorting the overall body of work.
roceasta··on No One Fails Anymore – Everybody ‘Pivots’
Yes. The realistic alternative to pivoting isn't beating yourself up in a press conference or something like that: it's self-sabotage. People self-sabotage so they can pretend they never tried and thus avoid seeing themselves as failures.
roceasta··on The Lost Pleasure of Reading Aloud
>intonation and emphasis just right.

Yes. The emphasis carries a lot of information in addition to the simple text. I find it hard to do when reading aloud from a book I haven't myself read before. In fact I think it's one reason I tend to pick my personal childhood favourites to read.

Perhaps this is lazy. I wonder if other parents do the same?

roceasta··on How rare earth metals rose from obscurity
Fortunately for us all regular free shipments of rare earth metals are now available:

cneos.jpl.nasa.gov/ca/

Simply deflect onto the approval-pending lunar crash site! Friendly robots will construct an Ore-some(TM) plant for processing and EM-powering fulfillment to the ZIP code of your choice.

roceasta··on Self-flying planes are now a marketing issue more than a technical one
Makes sense. Apart from the ground, it's harder to collide with other objects in 3 dimensions than it is in 2 dimensions.
roceasta··on Can we know what animals are thinking?
Interesting.

>They can’t conceptualize that there could exist a mind of thoughts and feelings outside their own.

Presumably they don't have a concept of their own mind either. And this is despite being quite sophisticated and hosting a bunch of memes related to things like tool-use:

https://link.springer.com/article/10.1007%2Fs10071-011-0403-...

Whereas primitive humans painted pictures of themselves on cave walls. Which seems like an early attempt to explain themselves to themselves.

roceasta··on Can we know what animals are thinking?
I don't. It's a guess. But I do think our ability to explain things comes not just from our genes but from our culture, and culture is something animals haven't yet developed.
roceasta··on Can we know what animals are thinking?
Another example: we ask whether animals are 'conscious' or not, or we declare ex cathedra that certain animals are conscious, all the while without being able to explain what consciousness is, or what qualia are, or how these work.

If we could then we'd know if the question made sense.

I like David Deutsch's criterion for assessing claims about these issues: if you can't program it, you haven't understood it.

https://www.youtube.com/watch?v=J21QuHrIqXg

roceasta··on Can we know what animals are thinking?
Here is the sense I mean to convey. When a fridge light comes on, does the fridge 'understand' anything? Does it know anything? No, the process is just automatic.

Objects such as books can contain knowledge without understanding anything because they don't have minds. The design of the fridge embodies knowledge about human needs, for example the need to hand-select food accurately at night. However there is neither understanding nor intuition anywhere inside that cold box about the relationship between the door opening and the light coming on.

Similarly, words, which are a type of meme (the type that can be pronounced) can exploit brains to make copies of themselves, without any understanding of this going on in those same brains.

Btw, none of this implies that animals can't think, or don't have minds, or that we shouldn't honour them. Actually I honour my fridge too...

roceasta··on Dancing can reverse the signs of aging in the brain
Couple of things about dancing: (1) it's easier to think because you're moving about, (2) dancing partners are usually of the opposite sex. Both these factors seem like stimulants for learning and rejuvenation.
roceasta··on Can we know what animals are thinking?
>Chaser, a border collie, knows over 1,000 words. She can pull a named toy from a pile of other toys. This shows that she understands that an acoustical pattern stands for a physical object.

I don't think it quite shows this. Collies and human toddlers use words (and are used by words) without understanding what they're doing or what the meaning of language is. The understanding comes later, growing over time as we attempt to explain our behaviour to ourselves. (Including reading what other people have to say about language.)

roceasta··on Can we know what animals are thinking?
Yes. To be fair I think most people here want animals to be able to think (and for other humans to think that animals can think) because they want animals to be protected from humans.
roceasta··on Can we know what animals are thinking?
You're trying to explain why you think animals can think. The desire and the ability to explain things, and not thinking per se, is (I guess) what distinguishes humans from animals.
roceasta··on Mental processes of chess masters revealed how people become experts (2016) [pdf]
My guess is that 'low-latent inhibition' plus a great memory plus long practice make for mastery.

http://www.lowlatentinhibition.org/what-is-lli/

(And those who force themselves to practice are going to get injuries like repetitive strain which are really a kind of 'inner rebellion' against this forcing.)

roceasta··on [dead]
Does the love of death make one more left-wing?

https://www.nature.com/news/over-half-of-psychology-studies-...

http://www.scottmanning.com/content/communist-body-count/

roceasta··on Metformin Promises to Extend Life for a Nickel a Pill
>You could also be able to shrink the suffering and enormous expense that accompanies cancer, heart disease, dementia, and all the other plagues of growing old.

No. It could at best defer the health costs. We need to stop being passive about this and embrace the idea of (1) life extension technologies for those who want, (2) assisted suicide for those who don't.

When this philosophical shift happens we can get much more serious about life extension research and mental well-being (purpose; reasons to live) and reduce the vast expenditures on palliative care for those who are merely waiting around to die.

roceasta··on Why it’s healthy to take a break from your online persona (2016)
Imagine you're a boxer and you get into fights all the time, outside as well as inside the ring. You only feel safe with your fists up, but you can't control your arms directly. They only go up when you're facing an opponent. Therefore you need to have an opponent at all times.

This is a metaphor, because real boxers obviously do control their arms.

But substitute certain emotions (e.g. anger, fear) for the arms, emotions with which one is strongly identified, the loss of which causes a greater fear (of disappearing, of death).

roceasta··on The Scotsmen Who Invented Modernity
Dying of cancer, David Hume wrote some notes about his life. The final paragraph is rather moving because he speaks of himself in the past tense:

>To conclude historically with my own character. I am, or rather was (for that is the style I must now use in speaking of myself, which emboldens me the more to speak my sentiments); I was, I say, a man of mild disposition, of command of temper, of an open, social, and cheerful humour, capable of attachment, but little susceptible of enmity, and of great moderation in all my passions. Even my love of literary fame, my ruling passion, never soured my temper, notwithstanding my frequent disappointments. My company was not unacceptable to the young and careless, as well as to the studious and literary; and as I took a particular pleasure in the company of modest women, I had no reason to be displeased with the reception I met with from them. In a word, though most men, any wise eminent, have found reason to complain of calumny, I never was touched, or even attacked by her baleful tooth: and though I wantonly exposed myself to the rage of both civil and religious factions, they seemed to be disarmed in my behalf of their wonted fury. My friends never had occasion to vindicate any one circumstance of my character and conduct: Not but that the zealots, we may well suppose, would have been glad to invent and propagate any story to my disadvantage, but they could never find any which they thought would wear the face of probability. I cannot say there is no vanity in making this funeral oration of myself, but I hope it is not a misplaced one; and this is a matter of fact which is easily cleared and ascertained.

https://andromeda.rutgers.edu/~jlynch/Texts/humelife.html

roceasta··on “Learning How to Learn,” the most popular course on Coursera
Fantastic that resources like this now exist. In some ways it seems to be reminding us about how we used to learn. Children spontaneously go back again and again to things that delight them (spaced repetition) and they switch activities when bored (Pomodoro). Unfortunately, perhaps as a result of schooling, or other hard knocks, the spontaneous impulse gets lost. Adults suffer from mixed motivations and seem to be fairly clueless about what they find genuinely interesting. It becomes difficult to approach topics playfully.
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