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In my time as a biochem undergrad and grad student, I had to memorize and regurgitate the Krebs cycle no less than four times. None of those romps through it addressed the question of how TF did those scientists figure it out.

There's the science of Karl Popper, where no statement can be considered scientific unless it is possible to devise an experiment to disprove it. And there's the science of education, where we memorize and regurgitate stuff.

Those two are stunningly different from each other. Yet, it's not possible to get to the mysterious work of actually doing Popper-level science without memorizing what went before. The critiques of this paper still ring true half a century on. I wish more students of science from primary school on up would pester their teachers and each other with the question, "how do you know?"


I sort of agree, but compared to just learning the Krebs cycle it takes orders of magnitude more time to understand either (a) the actual historical discovery/justification or (b) a modern streamlined justification that would allow one in principle to reconstruct it. It's already very challenging to teach biology students as much as they need to know without justifications. For them to be able to justify all they know would dramatically reduce how much they could be taught. And indeed, the desire by teachers that their students should know the justifications has often led to the actual history being so grossly compressed and caricaturized that it's downright misleading -- worse than not knowing.

It seems the best we can hope for is to mostly just learn the known facts and, separately, the abstract way in which scientific theories are justified, augmented by a close analysis and understanding of a few case studies. Even that if of course rarely achieved in education.

Incidentally, folks in this thread may be interested in "Proofs and Refutations" by Imre Lakatos, where it's shown how this same issue is (surprisingly) found to exist almost as badly in academic mathematics, despite math being thought of as one of the few places where the experts learn how to the edifice is built from the ground up.


FWIW, the XML signature stuff in dot net just works. Once you get dot net's XML stuff itself working.


I needed to use SQLite from php to develop a WordPress plugin. (Yeah, yeah, I have heard most if not all the jokes about that particular stack.)

Here are some notes about my experience, offered to anybody who might be able to use them. https://www.plumislandmedia.net/reference/sqlite3-in-php-som...


Looks like some web designers in law enforcement are having some fun making fun of the cybercreeps.


Dang, Rachel, you must have had a rough day at the orifice that day. Condolences.


Let us not forget his collaborator, Amos Tversky, who died young in 1996, and who certainly would have been a co-prize-winner had he lived.


This is great.

I wish it worked with glass :-) :-)

I sometimes sweep up broken glass from bike lanes in my community. I need gloves, a broom, a dustpan, and a trash bag. Not as efficient. Needs a car, not a bike.


some sort of specially designed vehicle with brushes on the side. what would we call such a thing. some sort of sweeper for the street. idk


Read about what to do: _The Fifth Discipline_ by Peter Senge. A bit dated by now, it's still good stuff about "systems thinking" . And you'll need a lot of deliberate systems thinking in your job, and you'll need to teach others to think that way.

Read about what not to do: _The Ultimate Question_ by Fred Reichheld. This book is about the notorious Net Promoter Score. (Would you recommend HN to a friend? Would you? Would you?) Reading it will give you insight into how bonehead MBAs with Cs in their marketing classes can convince leadership they've come up with a good way to measure customer satisfaction. (Net Promoter Score works fine for competitive businesses selling commodity products -- rental cars to individuals for example -- but not for many places where it is now used.)


It would be great to get a straightforward assessment of the improvements in reactor tech in this new plant. "Passive safety features" sound pretty good to my untrained ear. But how much of this is marketing bullshytt?


AP1000 has a water tank above the reactor, and can cool itself for 72 hours without electrical power or human action. This design probably would've prevented the Fukushima meltdowns.

Ideally, reactors should be designed to transition all the way to air cooling without any help. The high temperature designs (e.g. TRISO and molten salt) should be able to do this, if we ever build them.

After Fukushima, the FLEX program was created to protect existing US reactors from a similar scenario: https://inis.iaea.org/collection/NCLCollectionStore/_Public/...


Cool! The 11/70 I worked on had a defective floating point unit for a while; when it overheated it would start garbling MUL results. I don't suppose this has that "feature" :-)


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