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downer

286 karma · joined November 4, 2007

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downer··on Simulating Neocortical Column Of Rat Brain - IBM Blue Gene/L Supercomputer
If a supercomputer can simulate a model, what would it take to simulate a supermodel? 'Cuz that would be "handy" for me...
downer··on Drugs to build up that mental muscle
I don't know what effect neurotransmitter precursors have on endogenous production, which is why that information would be useful so we can better judge their safety. The steroid example was to point out that there could be substantial repercussions from taking a substance which you produce naturally. You don't even have to take excessive doses -- take in only as much as you would normally make and your body's production may drop to zero, since it's now being completely replaced. Steroids must be cycled down gradually, because going off cold turkey just leaves you with a crashed endocrine system. If neurotransmitter replacement works similarly, one can imagine a few problems that might crop up with a crashed brain.

> Choline precursors don't seem to have these same "down-regulation" harmful side effects when taken in moderation to bring brain acetylcholine levels back into "normal range."

"Don't seem"? Human studies needed. Maybe these already exist -- that would be handy. I'm not familiar with neurotransmitter supplementation.

Taking something because you have a deficit is indeed different from trying to massively exceed your nominal levels.

In the context of performance-enhancing mental drugs, exceeding your typical levels is of course the point of the exercise.

> "programmer burnout" which likely involved depleted acetylcholine levels in the brain

Possibly, but that assumption seems like it could be quite a leap.

Kind of like saying coffee works because of depleted caffeine levels in the brain. In fact, we have no data on what caused his particular case of "burnout". We can well imagine that an adrenaline shot, cocaine, ephedrine, and many other drugs could well "restore performance", but that doesn't indicate there was a deficit of those particular substances.

Provigil and Ritalin may also help but that doesn't mean there was a deficit of those, either.

An ACh deficit is only one of a bazillion possible reasons for "burnout".

downer··on Top 10 Javascripts for Image Manipulation
DUDE TEH INTARWEB JAVA SCRIPTS WERE PUT THARE BY BILL GATES FOR FREE JUST TAKE EM
downer··on OLPC a huge hit in Peru
Wow. I wish the U.S. were a Christian nation then. School half-days were a rare reprieve... those lucky kids get 'em all the time!

I aPERUve.

downer··on Size Is The Enemy
Great, now I'll get 50,000 "Reduce Your Size" spams a day instead.

Hmm, those could actually be useful...

downer··on OLPC a huge hit in Peru
You know you're thinking it.
downer··on Facebook challenged by ad-free rival, Badoo
12.5m users is pretty impressive considering what they're up against.

Facebook is vulnerable. The obvious way to hijack is to pull a Facebook on Facebook itself -- ask for your FB password and then copy out all your information, and msg all your friends.

If you could click a button and do a horizontal transfer to an equivalent service any time some other service crossed the line of what's acceptable to you, people would migrate in droves. Big companies survive because of inertia -- the truly disruptive technology that the Net should enable is to remove it.

Facebook's evil ways will doom it.

downer··on Plan B: Why "What Got Us Here, Can't Take Us There."
"Plan B (R) is not a substitute for routine birth control. It's important to remember that Plan B (R) does not protect you from HIV infection (the virus that causes AIDS) or any other sexually transmitted disease (STD)."
downer··on Lisp: love the language, hate the people
http://programming.reddit.com/info/updn/comments/
downer··on 8-year-olds should test my code
8-year-olds should write my code.
downer··on Ask YC: Deciding what programming language
There's a converter for 2.x to 3.x. Or you can transition code by hand -- there are some differences in some places. Breaking backward compatibility just means not everything is guaranteed to work the same -- it does NOT mean that now everything is different. It's still Python.

Being "out of date" doesn't make any sense -- today's libraries aren't suddenly going to become less functional later. The stuff that works today will still work 5 years from now.

You change versions IF the new version gives you something you need. You don't change just because it's new.

And, always, the paper tiger is better than the real one. Not doing something today because it'll be outdated in a few years would mean never doing anything in the computer industry.

downer··on Why did Albert Einstein hate freedom?
Freedom?

Oh oh, Million dollar idea: Time travel buddy movie with Einstein and William Wallace. Call it Brainheart.

(Million dollar, as in the revenue. I.e. a complete flop.)

downer··on Ask YC: Expectations and Reality (Startups)
And even then, sometimes you still need Steve Jobs.
downer··on Is there an opposite to absolute zero?
Yeah, Chuck Norris.
downer··on Simulating Neocortical Column Of Rat Brain - IBM Blue Gene/L Supercomputer
"Markram believes that with the state of technology today, it is possible to build an entire rat's neocortex, which is the next phase of the Blue Brain project, due to begin next year. From there, it's cats, then monkeys and finally, a human brain."

Not in Kazakhstan...

downer··on Drugs to build up that mental muscle
> Since I have a really terrible memory, I would jump on a memory drug in an instant.

I also have a terrible.... umm... what's it called...

Oh, look, a pony!

downer··on Drugs to build up that mental muscle
GIYF. "Dimethylaminoethanol is related to choline and is a biochemical precursor to the neurotransmitter acetylcholine" (ACh).

"In the central nervous system, ACh has a variety of effects as a neuromodulator, e.g. for plasticity and excitability. Other effects are arousal and reward."

Do you remember Andro (androstenedione, used to be available in stores, used by Mark McGwire)? It's a testosterone precursor. Your liver converts it to testosterone (and also some amount converts to estrogens). So a neurotransmitter precursor would seem to be a bit like steroids for the brain.

Not sure how external supplementation affects endogenous neurotransmitter production, but with hormone precursors the biofeedback loop tells your endocrine system to stop its own production. E.g. if you take testosterone, your body shuts down its own production (when your testosterone level hits a certain point, your body thinks "oh, that's enough for now" and hits the off-switch on your testicles. This turns off ALL their functions, so it's actually also a form of birth control. And since they aren't doing anything, they atrophy).

Fun note: Your body tries to keep your testosterone:estrogen ratio at about 50:1 (for young men). So if you take androgenic steroids, your body increases its own estrogen production. Once you hit a certain absolute amount of estrogen, you're growing breast tissue.

Then you are a man. With titties.

(Bodybuilders combat this by using certain steroids that don't aromatize into estrogen as much, and also using anti-estrogens that either bind to the aromatase enzyme to stop conversion into estrogen, or bind to the actual estrogen receptor sites like Clomid. One interesting effect of Clomid -- that makes it attractive to male porn stars -- is it causes big pop shots.)

downer··on Ask YC: How should I approach Drupal?
Django -- Django Reinhardt

Drupal -- RuPaul?

downer··on Continued Sad State of PHP Development
In the sense that every human is one of the 7 billion best...
downer··on Ask YC: Expectations and Reality (Startups)
> Why do you need to maintain control? Greed? Paranoia? The idea is too complex for others to understand? (note: none of these are good reasons ;) )

Note that maintaining control is different from hoarding all the money. The people who understand it best should be in control, regardless of how much equity they give to investors. This is not just in the early stages -- look at Steve Jobs calling the shots at Apple.

> As a leader, you should always strive to ensure that you can be replaced, and that the company can and would continue without you.

That's just not how startups work, at ALL. Losing a founder basically dooms a startup.

It only applies much later on, when the company has a huge bankroll and a life of its own.

downer··on The Afterlife Is Expensive for Digital Movies
This is a very silly article. Storage gets progressively cheaper. If it costs 2^18 dollars to store it today, it'll cost $2^17 to recopy it next year, $2^16 the year after that, and so forth.

Basically, if it costs N dollars today, it will cost roughly 2N dollars over its lifetime.

downer··on The Afterlife Is Expensive for Digital Movies
Except you're storing data produced by yesteryear's computers with today's storage when you copy. Once a film is in the can it's static.

Today wins.

downer··on The Afterlife Is Expensive for Digital Movies
That's with historical proprietary formats.
downer··on Three Language Features You Need To Understand Before You Dismiss Common Lisp
> "... we were not out to win over the Lisp programmers; we were after the C++ programmers. We managed to drag a lot of them about halfway to Lisp."

I've never understood that mindset. Java is about the opposite direction from Lisp.

At least C++ has generic metaprogramming.

downer··on Ask YC: Deciding what programming language
2.x versions will be around for a looong time.

It's not like suddenly everyone is going to switch to 3.0.

downer··on Alan Kay's list of recommended reading
And my mind didn't even buy the list dinner first.
downer··on Seth Godin on Iminlikewithyou: Learning from flirting
Only if Photoshop works live, in person.
downer··on Ask YC: Deciding what programming language
Hmm. You could be a competitor.

I recommend using PHP and Java.

downer··on Unix makes Computer Science easy
Leave it to a Java programmer to extol the virtues of shell scripting.

Java's really that bad, is it?

downer··on Humour 'comes from testosterone'
Another data point that fits the theory.
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