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361  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 06, 2015, 05:06:32 PM
As far as I know, the amount of screen space (i.e. forum width) on that site is customizable by the user.  Yeah, technology!

The "user mini-profiles" on the left-hand column force every response to consume ~2 inches of screen space, even if it is just one line long.

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Sidebars are a fact of life.  Any website on the planet designed after 2005 has one, including reddit and all modern forums. Sidebars could even contain (gasp) useful information.

Yes, it seems that that Swiss school had quite an impact on the web.  Grin

As I wrote, most sidebars out there are read and used by readers only once every solar eclipse.  Displaying that information all the time is distracting and inefficient.  Most sidebars could be made into pull-down menus or separate pages, freeing screen estate for the information that readers are actually looking for.  The list of  "other languages" in Wikipedia is a good example.

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Everything else, including animated gifs and gray text on gray background you are pulling out of your ass.  I have not seen a single animated gif or gray text on gray background (unless you're colorblind) on that forum.

You are right about animated gifs, my mistake (There is an "online now" green dot on the avatars that does some silly anmation when the mouse wanders over it; but that is tolerable.)

As for grey on grey, I was being too terse.  The general problem is using low-contrast font-background pairs, like white on yellow or gray on tan; there are several examples of that on that forum.  

The human eyebrain uses only the brigtness ("black and white") color channel to recognize outlines of things; it ignores hue and saturation.  So, when choosing fg/bg colors for text, one must be aware of their brightness.  

Besides the first 16 digits of Pi and the name of that New Zealand town, people should also memorize this table:

White 1.0
Yellow 0.9
Cyan 0.7
Green 0.6
Magenta 0.4
Red 0.3
Blue 0.1
Black 0.0

The brightness of other colors is complicated a bit because of a thing called "display gamma", but, to a very rough approximation, mixing or adding colors has the same effect on their brightness.

When choosing a text fg/bg combination, one should try to maximize the difference between their brightnesses.  (Relative difference is more important than absolute, but reflection of ambient light on the screen raises all values so that absolute matters too.)  

From that table one can see why blue/black is a terrible choice, and white/yellow is worse still.   Even green/white is bad.  Good choices are black/white, blue/white, blue/yellow, black/yellow, etc..  Red/white and magenta/white are still OK. If other colors are to be used, one should mix enough white or black to ensure a large brigtness contrast.

Some combinations (like red text on the right shade of dark green background) can be totally unreadable, even though the colors are quite distinct.  Looking at such text is a bizarre experience: you can tell that there is text written there, but you cannot make out a single letter.

(You may notice that eye clinics have a fondness for blue lighted displays.  Besides blue/black being harder to read, blue is also the color channel that gets the least "localized" by the brain; that makes such signs look maximally blurry.)
362  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 06, 2015, 04:21:53 PM
the object of study is a fundamentally flawed protocol

This sounds like a sufficient subject for a journal article, if, indeed, you can support that thesis.

The flaws too are well-known, such as: lack of inflation causes hoarding, speculative overpricing, and price volatility; that and fixed mining reward leads to concentration of mining; no ways to reward relay nodes; no way to fix fees; no way to reverse fraudulent or criminal attacks; and more...

Bitcoin was a great advance towards the solution of the old problem of designing a decentralized payment system; but it is not the solution yet.  We must wait for another Satoshi or two to invent the parts that are still missing...
363  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 06, 2015, 04:14:55 PM
BitcoinXT challenges BitcoinCore's supremacy -- no change in the BTC price

BitPay reveals loss of 6 months worth of revenue -- no change.

Major banks ditch Bitcoin and go for permissioned blockchains -- no change

BitcoinXT loses its initial support -- no change

21co releases their bitcoin-enabled RPi -- no change

BlockStream open for a 2 MB block size limit -- no change

Banks force most bitcoin firms in Australia to close -- no change

Gemini gets a BitLicense and announces opening -- no change

Malleability attack by a bored Russian causes general havoc -- no change

Jack Liu of OKCoin on Bloomberg TV -- price jumps by 8 USD in minutes.

Welcome to the world of 比特币...



364  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 06, 2015, 03:58:57 PM
Will we see an article in Ledger revealing your findings any time soon? Wink

I do have a half-written tech report detailing how a cartel of miners could force a change in the rules; but that has become common (if still denied) knowledge by now, so it would probably be rejected for that (if not for ideologocal reasons).

I wrote a few other reports and analyses here on bitcointalk, but nothing deep enough to be worth submitting to a journal, unfortunately.

Bitcoin is not a good topic for scientific research, because results become obsolete very quickly, the object of study is a fundamentally flawed protocol, and there is almost complete lack of information about the bitcoin economy.  Even the most basic data -- like the number of users and the volume of e-payments -- has to be guessed, and the guesses vary by two orders of magnitude or more...
365  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 06, 2015, 03:14:15 PM
http://www.ic.unicamp.br/~stolfi/

ASCII Ribbon Campaign?

Crusade against html?

And I still prefer to use emacs and Makefile instead of IDEs, C instead of C++ and Java, TeX instead of Word. And I write HTML directly with emacs instead of using a WYSYWIG editor.  Oh, and use function parameters instead of OOP.

(The thing I liked most about Java is that it gave me a good excuse to not learn C++: "why, it is obsolete already".  I am glad about that every time I have to read C++ (or even Java) code that my best students wrote...)

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You might not be representative for the average user.

It would seem so...  Sad

366  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 06, 2015, 02:30:31 PM
I think a lot of people have moved over to the new forum - come join us!
https://bitco.in/forum/threads/wall-observer.27

I read somewhere that in Switzerland there is a famous Product Design Hochschule that has given mankind such great advances as the black-on-black appliance control panel and the knee-busting car glovebox. 

I gather that they now have a new course where the best website designers of the world can learn advanced reader irritation techniques, like maximizing the amount of wasted screen space, writing with gray text on gray background, permanently displaying sidebars and menus that get used only once every solar eclipse, marking irrelevant information with animated gifs, and so on. 
367  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 05, 2015, 02:19:03 PM
I'm sorry but I don't really see the added value of yet another exchange.

On Tuesday they may put up a silly rocket animation with a countdown, ending with a Mars landing.  Then there may be another short-lived rally, like there was before the Coinbase launch.  And a quick crash when it actually opens, and people realize that it is just yet another exchange.
368  Bitcoin / Development & Technical Discussion / Re: New transaction malleability attack wave? Another stresstest? on: October 05, 2015, 02:11:03 PM
This is great news. It exposes the vulnerabilities and weaknesses of bitcoin and allows for better cryptocurrencies, like Litecoin, to grow.

Do you mean that Litecoin does not have the mealleability bug?
369  Economy / Speculation / Re: SecondMarket Bitcoin Investment Trust Observer on: October 04, 2015, 02:33:54 PM
Hey man, thanks for your work on this. I've checked this thread a gazillion times.
I was wondering whether the historic NAV's are plotted somewhere?

https://bitcointalk.org/index.php?topic=337486.msg10439889#msg10439889
370  Other / Off-topic / Re: Answer the question above with a question. on: October 04, 2015, 05:55:31 AM
Is 21 half of truth?
Did you know that 422 = 1764, the year that The History of the Decline and Fall of the Roman Empire was conceived?
Does that have anything to do with the fact that the volcano on the North part of Easter Island is the Westernmost mountain of South America?
371  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 01, 2015, 12:56:35 PM
OKCoin's volume looks weirder and weirder: huge "wash trades" that don't move the price, and now zero volume for several minutes in a row.  What is going on?

(Huobi's and BTCChina's, on the other hand, still look relatively "normal"  to me.)
372  Other / Off-topic / Re: Answer the question above with a question. on: October 01, 2015, 12:46:37 PM
Why would a human leg hanging out of that pile do so much surprise to you?
Is that a leg or an arm?
373  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: September 30, 2015, 04:26:57 AM
That's it. I'm switching from this forum to:
https://bitco.in/forum/

AFAIK that forum is owned and run by Roger Ver. 
Frankly, ...

that's incorrect, and if you were wondering where most of the discussion from the gold thread went...

OOPS, thanks for the correction.  I was confused by this announcement.

Who owns/moderates the bitco.in forum?
374  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: September 30, 2015, 04:06:54 AM
That's it. I'm switching from this forum to:
https://bitco.in/forum/
They even have a new Wall Observer thread there.
There is too much shit from the Theymos shills here.

AFAIK that forum is owned and run by Roger Ver. 
Frankly, ...
375  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: September 29, 2015, 05:50:30 AM
So we're supposed to believe okcoin just had 80k btc in volume in the range of a few yuan? This is pretty ridiculous.

Indeed.  Did those events start recently, or have they always happened, and I just did not notice them?

Could they be some money laundering trick? (One would expect money launderers to be smarter at hiding their doings...)

Perhaps the Chinese exchanges read about Tera's wash trades, and thought "bummer, those guys cannot do that because they are regulated, but we are not -- why aren't we doing wash trades ourselves?"

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I'm not buying the validity of this rally so far. Seems like everyone other than bitfinex (maybe coinbase exchange?) has plenty of wash "trading" going on.

I have read rumors that China is about to devalue the yuan.  Traders who had yuan in their accounts may be buying BTC as a way to ride over the devaluation with a profit.  In other words, the price in China ir not really higher than in the US: it merely has the expected devaluation of the yuan already  priced in.  Maybe?

If that is the reason, the rise in price in China may be limited to the expected devaluation of the Yuan.  That is, if they expect a 10% devaluation of they yuan, and expect the USD price to remain about the same, the price in Chine should not rise by more than 10%.
376  Bitcoin / Bitcoin Discussion / Re: The 21 Bitcoin Computer on: September 22, 2015, 02:47:17 PM
https://www.reddit.com/r/Buttcoin/comments/3lxrkg/all_the_comedy_gold_youll_need_to_know_about_from/

After months of suspense, the company finally revealed what market they were after:
Integrated Devices for the Internet of Things (IDIoTs).
377  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: September 20, 2015, 01:09:45 PM
Face it, Gavin fucked up! He should have stayed in as benevolent dictator. Wladimir isn't a leader, he is a follower. Now he's trying to follow the crowd. And the crowd are looking for leadership. The ship is adrift.
.

It may be sacrilege to compare the two, but I cannot avoid thinking of that time when Apple fired Steve Jobs.
378  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: September 18, 2015, 02:14:21 PM
Bitcoin expert on Bloomberg:  Increasing the block size limit will increase the supply of bitcoins and cause the price to fall, by the law of supply and demand. 

Oh, and in matters of bitcoin should trust only the opinion of people with Ph. D. 

Well, I can agree with that part.  Grin
379  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: September 18, 2015, 04:53:07 AM
Serious question for you.
Do you trade forex or stocks? I know you don't with btc but what about anything else?


No, I don't trade.  I did not even know what bids and asks and spreads were, two years ago....
380  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: September 18, 2015, 04:17:15 AM
I happened to notice a single 12'000 BTC trade on OKCoin.  And the price dropped by 0.10 yuan.  Weird.
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