DavidSJ

73 ms·

751.
by DavidSJ 12y ago
What is meant by "Microsoft accepting bitcoin" is that you can buy things from Microsoft using bitcoin. Customers don't care about the details of currency exchange on the back-end.
752.
by DavidSJ 12y ago
You don't need a BitPay account to pay using BitPay. The transaction occurs on the public bitcoin blockchain, from any bitcoin account.
753.
Microsoft accepting Bitcoin(commerce.microsoft.com)
416 points by DavidSJ 12y ago|148 comments
754.
by DavidSJ 12y ago
We've been promised that computers would revolutionize education for the last 30 years. Computers are amazing tools for open-ended play and exploration. But there's no place for open-ended play and exploration in our school system
755.
by DavidSJ 12y ago
During Apollo the federal budget was also many times smaller. In real dollars NASA's budget is only about 20% smaller than its average in the 60's. The difference with respect to human space travel is risk aversion and lack of foc
756.
by DavidSJ 12y ago
> SpaceX is at the moment in orbit Not for long: http://en.wikipedia.org/wiki/Deep_Space_Climate_Observatory
757.
Falsehoods you might believe after watching the Imitation Game(plus.google.com)
2 points by DavidSJ 12y ago|0 comments
758.
by DavidSJ 12y ago
I think I'm a human, but I did not realize that boy was on a trampoline instead of a wakeboard until you pointed it out. I think the water in the background confused me. I was also probably biased by reading the network's label be
759.
by DavidSJ 12y ago
From the paper [1]: > Essentially, an SPV proof is composed of (a) a list of blockheaders demonstrating proof-of-work, and (b) a cryptographic proof that an output was created in one of the blocks in the list. This allows verifiers to ch
760.
by DavidSJ 12y ago
Small point but: > Bitcoin’s block interval is ten minutes so it takes about five minutes on average for a new transaction to find its way into a block is wrong. The block interval is ten minutes on average , but not ten minutes uniform
761.
by DavidSJ 12y ago
Even with live data as a validation set (and ignoring your point about execution friction), it's inappropriate to naively infer expected future return from total return during the validation run, since asset price fluctuations don&#x27
762.
by DavidSJ 12y ago
I've always felt that a part of the problem on sites like reddit is that upvoting has essentially zero cost: just move your mouse and click the up arrow on whatever tickles you to do so. This means that a lazy comment which mildly amus
763.
by DavidSJ 12y ago
Wait... most of the energy of going into orbit is in accelerating to orbital speed (lateral), not getting away from earth (vertical). That's true for Low Earth Orbit, but as the radius of a circular orbit increases the kinetic energy
764.
by DavidSJ 12y ago
Many scientific theories have a history of the following sort: 1. Huh, those are some weird observations. What could explain it? 2. Maybe it's X? That could explain it. 3. So could Y? 4. Here's an experiment we could do to rule ou
765.
by DavidSJ 12y ago
Dark matter was proposed as an explanation for observations, e.g. the galaxy rotation problem. [1] Assuming the hypothesis is correct, then we have therefore already observed it (albeit indirectly, but all observations are indirect). [1] h
766.
by DavidSJ 12y ago
So, is that system a time bomb for China (and the rest of the world), when one day a financially critical entity doesn't have the right political influence and goes belly up, bringing the house of cards down? Or, is there some reason t
767.
by DavidSJ 12y ago
There have been two. The incident you're thinking of was accidental at first, then done deliberately with notice two months later: http://siliconangle.com/blog/2013/05/13/bitcoin-blockchain-h... Whe
768.
by DavidSJ 12y ago
Increasing the maximum block size would cause a hard blockchain fork. That sort of thing has been done before on a couple of occasions but it's by no means a small deal.
769.
by DavidSJ 12y ago
What ISP are you using?
770.
Coinbase lets 3rd party app use brand and spend user BTC, "believes it's secure"(twitter.com)
4 points by DavidSJ 12y ago|1 comments
771.
SSC Gives a Graduation Speech(slatestarcodex.com)
7 points by DavidSJ 12y ago|0 comments
772.
(pi^4+pi^5)^(1/6)(google.com)
52 points by DavidSJ 12y ago|45 comments
773.
by DavidSJ 12y ago
Very interesting work. Is there a development list or some other way to follow progress?
774.
by DavidSJ 12y ago
I think this reasoning is mistaken. Yes, bitcoin-accepting vendors act as a new sink for supply, but for that reason they also increase the incentive to leave bitcoin sitting in your wallet, ready to spend on something you would like to buy
775.
by DavidSJ 12y ago
This can be done in parallel with JS, without using an HTTP redirect.
776.
by DavidSJ 12y ago
At http://www.apple.com/mac-pro/performance/ , Apple advertises Thumderbolt 2 as 25x faster than FireWire 800. Thunderbolt 2 has bandwidth of 20 Gbps, which is 25 times FireWire 800's 800 Mbps.
777.
by DavidSJ 12y ago
This sort of language is routinely abused in a confusing manner. Usually when someone means "200% more/bigger/faster", they say "3x more/bigger/faster", instead of "3x as much/big/fast&
778.
by DavidSJ 12y ago
It seems to become bimodal towards the last decade or two. Any idea as to why?
779.
by DavidSJ 12y ago
Also, one of the article's key quotes makes the sunk cost fallacy: “They’re running out of time,” says Mark Sykes, director of the Planetary Science Institute in Tucson, Arizona, who is not involved in the mission. “We’re not just tal
780.
by DavidSJ 12y ago
Came here to say the same thing. Background colors and text changing without interaction and unpredictable consequences of navigation actions makes for quite the stressful experience.

More ›