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cbd1984

2,237 karma · joined July 19, 2014

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cbd1984··on A Lincoln High teacher gets all his students to pass the AP Calculus exam
Maybe if you went to more than two places in the US you'd get a different picture.
cbd1984··on Here's to the systems programmers – Writing Hello World on a home brew CPU
We've forgotten how hard of a problem RAM used to be, and how far into the Rube Goldberg we went to solve it.

Things We Actually Did:

Mercury delay lines were tubes full of mercury we sent vibrations through. Those vibrations would reflect around and get detected and read out later. This wasn't, technically, random-access, but it was memory.

Williams-Kilburn tubes were CRTs with long-persistence phosphor, the exact opposite of what display CRTs used, and metal plates on the front to allow the contents of memory to be read out. You could have two identical CRTs, one with the plate to use as RAM and one built into the display panel so the operators could see the contents of RAM in real time.

Core memory was tiny little ceramic ferrite doughnuts woven into complicated metal grids which would change how they were magnetized in response to a sufficient current; their state could be read back out non-destructively, and core was, in fact, nonvolatile. The core modules were woven by hand by women working with microscopes and very steady hands.

Being able to make usable amounts of memory out of components we can just etch into silicon was an amazing advance. Nothing short of revolutionary, really; computers as we know them would be flatly impossible without cheap, plentiful RAM.

cbd1984··on Sorites Paradox
> This is simply a failure to sufficiently define a word.

That's the point: How do you "sufficiently define" the word involved here?

Also, how do you "sufficiently define" the word 'ethical'?

cbd1984··on Identify Any Language Written in the Roman Alphabet at a Glance
Friendlier link: https://en.wikipedia.org/wiki/Martian_language
cbd1984··on Essential C (2003) [pdf]
> a course in IPA, which may I remind you precisely nobody understands.

Plenty of people understand IPA.

> No, "car as in character" is still.

It's still completely incomprehensible unless you know which vowel sound is meant, which is the whole point of this sub-thread.

cbd1984··on Essential C (2003) [pdf]
> Conversations like this are hard because accent doesn't transmit through text.

It does if you use IPA.

cbd1984··on Essential C (2003) [pdf]
It's IPA. It's the closest thing we have to an actual way to write down how people pronounce things which has any chance at all of being useful.

This "'foo' as in 'bar'" stuff is worse than useless most of the time, as you've just been shown.

cbd1984··on Essential C (2003) [pdf]
Had I written it in IPA, people would be complaining about that, too...

It's /kɛər/, as you can see here: https://en.wikipedia.org/wiki/Help:IPA_for_English

And, for the record, I have the Mary-marry-merry merger: https://en.wikipedia.org/wiki/English-language_vowel_changes...

cbd1984··on Sunrise is shutting down
The goal of a business is to make money.

They got bought out. That presumably made them money.

How is that not a proper business?

cbd1984··on Essential C (2003) [pdf]
Pronounced care as in the first syllable of character.
cbd1984··on Essential C (2003) [pdf]
This predates the stdint.h header, which gives you int32_t and so on.
cbd1984··on Who Was Ramanujan?
I don't want to what a slave-labor-using company has to say to be featured here.
cbd1984··on Who Was Ramanujan?
It's too bad they rely on slave labor.
cbd1984··on World's Obese Population Hits 641M
You are obviously too biased to be reliable on this subject.
cbd1984··on World's Obese Population Hits 641M
He is, though.
cbd1984··on World's Obese Population Hits 641M
These are factually incorrect, as has been proven:

http://anthonycolpo.com/sweet-stupidity-part-1-is-sugar-real...

http://anthonycolpo.com/sweet-stupidity-part-2-the-bitter-tr...

cbd1984··on World's Obese Population Hits 641M
Are you going to uncensor it?
cbd1984··on When code is suspiciously fast: adventures in dead code elimination
Nothing I said was wrong.
cbd1984··on World's Obese Population Hits 641M
It could be unflagged by the moderation staff.
cbd1984··on Show HN: Minoca OS – A new lightweight kernel, completely from scratch
The problem is that as long as the kernel is proprietary, people have no reason to trust it to run that kind of hardware.
cbd1984··on New GNU Emacs website
Flagged for insults.
cbd1984··on World's Obese Population Hits 641M
So you censor his side and leave the rest up?
cbd1984··on Who Was Ramanujan?
Too bad it's advertising for a company that uses slave labor.
cbd1984··on Tesla crash after flying 82 feet in the air shows importance of a crumple zone
Or use Kelvin like a scientist.
cbd1984··on Tesla crash after flying 82 feet in the air shows importance of a crumple zone
"Hey, 98.6, it's good to have you back again... "

One of the best-known numbers in biology came about due to a similar confusion over significant figures:

> The first systematic measurements of human body temperature were performed by the German physician Carl Wunderlich. In 1861 he measured the temperatures of one million healthy individuals (a sample size that seems too large to be believed). The average value was reported as 37 degrees celsius. When converted this value becomes 98.6 degreed fahrenheit. So what's the problem? Wunderlich's value has only two significant figures while the converted value has three. The last digit (the "point six" at the end) should be regarded with great suspicion. Wunderlich's converted value should really be stated as "ninety eight point something" if one is being honest.

Actually, if one is being honest and respecting the usual rules, it should be stated as 99°F; that is, rounded to two significant figures.

(And, of course, we're not that simple: Core body temperature rises and falls naturally due to a number of factors even when we're completely healthy, so any single number as "the" healthy body temperature is, strictly, incorrect.)

http://hypertextbook.com/facts/LenaWong.shtml

cbd1984··on Why Are Tenured Philosophy Professors Unhappy?
> What is science? natural philosophy!

It was, back a long time ago, but the natural philosophers fell away as more technical knowledge came to be required to advance the field.

> What is mathematics/computer-science? modern philosophy!

Not really, no. It doesn't provide any guidance for life and it doesn't grapple with any of the big questions, even to say they're meaningless. It isn't philosophy as anyone defines the term.

> The holy grail of computer-science is artificial intelligence!

That's the "holy grail" of one sub-field, maybe. Not the whole field by a long shot.

cbd1984··on Why Are Tenured Philosophy Professors Unhappy?
Aside from the fear and trembling eventuated by religion, we have happy atheistic philosophies. This just came up from the fortune program, for example:

    If there is a sin against life, it consists perhaps not so much in despairing
    of life as in hoping for another life and in eluding the implacable grandeur
    of this life.
                    -- Albert Camus
That pretty well describes my philosophy, and I'm reasonably happy.
cbd1984··on When code is suspiciously fast: adventures in dead code elimination
> Isn't it normal for compilers to just no-op functions that can be proved to have no side effects and no return values?

Yes, which is why the volatile qualifier exists: It makes modifying specific variables a side-effect, which then cannot be optimized away.

cbd1984··on US Senate website says use HTTP instead of HTTPS
Why is most of your mail sent in envelopes as opposed to on postcards? Why don't people default to postcards, and only use envelopes when they have something to hide?

This isn't about traffic analysis, it's about social expectations and social norms. If privacy is the default, the social norm is to be private, and to expect privacy. That's important.

cbd1984··on RIP Kuro5hin
Consider donating it to the Internet Archive. This is precisely the kind of thing they really do a good job with, and it's worth saving.
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