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aoki

437 karma · joined June 22, 2016

http://www.paulaoki.com/
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aoki··on Ghost students are creating an 'agonizing' problem for Calif. colleges
Pell grants
aoki··on Ghost students are creating problems for California colleges
IIRC to collect Pell you have to be enrolled past the withdrawal deadline. The CCs are keeping the disbursement fraud rate low by filtering initial admissions (they are estimating >30% fraudulent applications) and then kicking out bots before disbursement. The point of these articles is that this is costly: CCC admin has to spend >$100M on IT on the admissions end, the faculty have to police their online courses in a way that is really uncomfortable (false positives mean you kick out a real student), and even unsuccessful bots take up seats that then go unused once you pass the add deadline. The CCs need reform of the disbursement process or these costs will keep getting higher.
aoki··on Everyone Is Cheating Their Way Through College
This is not cheating at all. Professors often tell serious students to read multiple textbooks in parallel to see different pedagogical presentations of the same material. (In the US, syllabi often list “recommended” texts as well as “required” texts.) You just happened to be able to read texts in a different language.
aoki··on Vygotsky's Zone of Proximal Development
No, they bucket Vygotsky into “continental philosophy teaching methods” (see first paragraph), and dismiss “continental philosophy” as meaningless word play (see last paragraph). The first point is false even if you accept the second point.

The compressed textbook derivatives are obviously not an exercise in “continental philosophy,” an undergrad text for teachers is just going to give surface-level descriptions of concepts rather than any kind of actual philosophical discussion.

aoki··on Vygotsky's Zone of Proximal Development
Vygotsky’s Ph.D. was in psychology, from a psychology institute, and he worked professionally as a PI in experimental developmental psychology. Indeed, one of the themes of his work was to try to find a scientific basis for the study of cognition. But nobody is interested enough in studies of Russian children from the 1920s to track down the tech reports. People today read his essays summarizing his theories (like the ones in Mind and Society) so they can understand the connection to later work. The theories were also influenced by philosophy because his undergraduate training was in the humanities, but that doesn’t make his work “just, like, words”.
aoki··on Show HN: My from-scratch OS kernel that runs DOOM
In the fine tradition of Nachos and Pintos! (Still waiting on Burritos - which would obviously have to be based on functional programming principles - and Churros.)
aoki··on Attention Spans for Math and Stories (2019)
> What’s really needed is more story-focused content between basic number sense and undergraduate level math. YouTube channels like Numberphile (particularly Tadashi Tokieda’s episodes that explore curious toys) are a fantastic invitation. More could exist in various forms, particularly those that transition from these delightful introductions to deeper, more complete theories while still holding on to the stories. The closest I’ve found for young children is the comic book series Beast Academy.
aoki··on South Korea Is over [video]
Japan’s dream: robot caretaking that becomes cheaper (including its inputs, like food for the human) at an even faster rate.
aoki··on Harvard's response to federal government letter demanding changes
I mean, we literally just saw what happened at JHU when their USAID funding vanished. Everybody on that soft money got laid off.

That’s what makes stands like this hard for admin: you’re risking massive layoffs in the programs that are often the least political to defend the academic freedom of the programs that are often the most political. Columbia made one decision. Harvard is making another. You could make Lord Farquaad jokes here, but if it alone loses its federal funding in these expensive research areas, it will lose its preeminence in those areas for a long time.

aoki··on A balanced review of Math Academy
Valid, my younger kid forgets a lot of stuff without that kind of reinforcement.
aoki··on A balanced review of Math Academy
This shows as “Borrow Unavailable” for me.

The Internet Archive lost a court case against the publishers, so many books (including all books that are still available for sale) have been (or are being) soft-removed :-/

aoki··on A balanced review of Math Academy
Honestly I’d do the BA. Later he’ll have memories of silly characters, funny pictures with hidden cultural references, and bad jokes, not just grinding XP. We still refer to Grogg and Captain Kraken.
aoki··on Math 13 – An Introduction to Abstract Mathematics [pdf]
In the US, the standard course sequence (e.g. at a good state university) is two years of calculus, diffeqs, and linear algebra (all taught as on-paper computation) concurrently with a course in discrete mathematics. The discrete mathematics course often doubles as an introduction to proof (as is apparently the case at UCI). Year 3 typically covers proof-based analysis, algebra, and linear algebra and some electives. Year 4 is typically electives.

At a fancy school, you can often take proof-based honors versions of Year 1-2 courses but you still may not get to skip over all of Year 3. Think: calculus using Spivak and real analysis using Rudin.

At Harvard, you can take Math 55, which is essentially Year 3 above (plus complex analysis) in Year 1.

aoki··on Ask HN: I'm an MIT senior and still unemployed – and so are most of my friends
It’s less than ideal if you do want to be a technical IC later as it’s typically a multi-year technical career gap. I never saw another ex-(US-)officer SWE/SEM appear in the veterans@google ERG. And tbh I didn’t really count either because I had a post-service PhD.

But to be sure I served with two amazing MIT NROTC grads in my sea tour. You do what you have to do.

aoki··on Neurotoxic worms growing up to 3ft long are in Ontario, Canada
I suppose they’ve been watching the Australian “everything here will kill you” meme and taking notes. Moose, geese, land planaria, Albertans…
aoki··on Neurotoxic worms growing up to 3ft long are in Ontario, Canada
TIL there are land planaria, what a pain that must be: “kill them with salt, vinegar, or neem oil, then dispose of them in a sealed container…avoiding any method that involves cutting the worms, as these segmented creatures can regenerate into two separate worms if split in two.”
aoki··on The average college student today
> Quals will never be implemented at large in undergraduate mass-market coursework.

I believe proctored math placement tests are still common upon matriculation at less-selective colleges (e.g., directional public schools). Usually Accuplacer or done in ALEKS. That said, the outcome these days may be corequisite section placement rather than remedial course placement. Colleges have to balance readiness against the graduation delays that remediation adds (which often lead students to drop out entirely).

aoki··on The average college student today
In the US, it was estimated that about half of HS grads had an A- (3.7) average or better. That was in 2016 and was ~10% higher than in 1998, so one should assume that it would be higher now.
aoki··on America Is Watching the Rise of a Dual State
As others have said, every state is already a dual state to some degree. But I would like to thank OP for introducing me to this useful term. (I took more poli sci classes than physics classes in college but still somehow never ran across this one.)
aoki··on Global population datasets underrepresent rural population
It’s not.

A census literally counts every individual. Census public reports are aggregated for privacy.

This is about spatial disaggregation of aggregated census data. The problem in developing countries (which is what these datasets are used for) is that they often fail to run a complete census (in some cases, for many decades) because it is expensive and/or the government is not functional. So these datasets may not be well-calibrated overall.

The US has no problem running a decennial census, aside from nonresponse by immigrants, conspiracy theory enjoyers, etc.

aoki··on 'Once in a Century' Proof Settles Math's Kakeya Conjecture
Each area has its own “most important” conjecture(s), so Quanta is in no danger of running out of proofs to write about that somebody legitimately thinks are super important.

(Alas, while “most important” conjectures are a renewable resource, lay reader tolerance for such headlines may not be.)

aoki··on 'Once in a Century' Proof Settles Math's Kakeya Conjecture
The study of Kakeya sets is over 100 years old — so if you think this generalized conjecture is the most important one in their subfield, you can see why somebody would describe it this way.
aoki··on History of Maths for Beginners
I laughed when I got to the end of this wall of text, full of “ahistorical fantasies” and “what the fuck moment,” and read: “Despite my negative comment about some points in the book, I would actually recommend it as a reasonably priced, mostly accurate, introduction to the history of mathematics. … A good jumping off point for somebody developing an interest in the discipline.”
aoki··on Parnassus plays
> The trilogy raises an Elizabethan question: After college – what comes next? …universities were producing more scholars than there were opportunities for them. …Their great education tended to discourage them from taking up the humble trades of their fathers. The Parnassus plays may not provide a solution, but they at least illustrated the fears of such ambitious young scholastic dreamers.

So — elite overproduction is not a new problem, you say?

aoki··on Doge seeks to cancel lease on key NOAA computing facility
The lease mentioned in the article that concerns me more is the weather radar support facility in Norman. Last time I looked into weather data, prediction quality was much worse in the places where the WSR-88D radar coverage is spotty (the West, notably the Rockies) and the models have to rely on satellites and ground sensors; and it seems like Tornado Alley will totally get screwed if the long-range radars that can see wind start to fail?
aoki··on 'Evolution happens much quicker than Darwin thought'
> What's the point of the article

It’s an interview with Rosemary Grant, occasioned by her new memoir.

aoki··on Harvard applications drop 5% after year of turmoil on the Ivy League campus
They rebranded (and reinvested in) Humboldt State a couple of years ago in the hopes of reversing declining enrollment.
aoki··on Harvard applications drop 5% after year of turmoil on the Ivy League campus
Most don’t and live with the crowding (recently happened at Purdue, Northeastern among others). But UCI rescinded aggressively in 2017 and nobody cares anymore. (You just have to actually enforce the things like “you need xyz GPA in your final semester” that they are often lax about.)
aoki··on Harvard applications drop 5% after year of turmoil on the Ivy League campus
Elite universities don’t weed out to get rid of students, they need a super high graduation rate for the rankings metrics. But they can use weeders to get you to change your major to an easier one.
aoki··on New evidence found for Planet 9
Wait until you open the arxiv paper and find that one of the authors is Michael E Brown, the self-proclaimed “guy who killed Pluto”
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