HNHacker News
TopNewBestAskShowJobs

jpdoctor

4,578 karma · joined October 28, 2010

submissionscomments
jpdoctor··on Startup Universe - a Visual Guide to Startups, Founders and Venture Capitalists
Ah that explains it. Crunchbase semi is definitely defined as things for M&A guys, and the data are terrible. (Look at Sequoia Comm for example.)

Numonyx was Intel unloading some of their crappier memory biz lines. They eventually unloaded it on micron, which makes me think that some of micron's BoD (or someone in the decision tree) made off personally.

jpdoctor··on Startup Universe - a Visual Guide to Startups, Founders and Venture Capitalists
Nice visuals, but just a quick check of the data: Numonyx is a startup? Really? Then why not FreeScale?

Increasingly, "startup" seems to be defined as a way for the M&A guys to make money. If they can't make money, then it's not a startup (or it's a "lifestyle company".)

jpdoctor··on The Laws you can't see
Better title: The article you can't see.

(Had to jigger the site to beat the paywall. What's the way to link through google again?)

Edit: I had reached 10 articles. Easier solution is to just open a private browsing window.

jpdoctor··on NSA leaker Edward Snowden 'accepts asylum in Venezuela'?
> As a European, I'm utterly and totally ashamed that nobody here actually offered him asylum. None.

Just imagine how the self-aware Americans (US) feel.

jpdoctor··on What Lazy Evaluation Really Means
I clicked for the same reason.

Might be worth changing the HN title to be more descriptive. My suggestion: "What Lazy Evaluation Really Means"

Yes I know it undoes the cutsie title, but he's just going to deliver a bunch of bandwidth, get no ad clicks, and waste a bunch of people's time.

jpdoctor··on Alternative Internet
Sorry, I don't see where they are generating random noise or keywords from your link. The link seems to be discussing the merits of a relay of existing traffic.
jpdoctor··on Alternative Internet
> Just randomly is detectable!

Only after analysis, and only after some confidence level has been exceeded. And that is the point: Such analysis takes time and resource.

jpdoctor··on Alternative Internet
Something that seems to be missing from the current world: A P2P noise network.

A sufficient amount of encrypted noise emitting from many nodes makes the task of capturing and decoding everything quite a bit more challenging for an intrusive regime. Effectively, this is steganography: Everything should be encoded in cat pictures with an accompanying text of hot keywords.

jpdoctor··on Ask HN: How does one create a fake identity?
Would be an interesting book (for your copious free time.)
jpdoctor··on How to Opt Out of AT&T's Plan to Sell Data About You and Your Smartphone Use
Skip the blogspam: https://cprodmasx.att.com/commonLogin/igate_wam/controller.d...
jpdoctor··on Here’s who spent their Fourth of July protesting the NSA
> including CNN, CBS, NBC, Reuters, the Guardian

I hope the chief editors there have realized that their own phone calls and emails are being scanned. You would guess that it is in their best interests to give this issue a helluva lot of attention in their media.

jpdoctor··on Google paid AdBlock Plus to get its ads whitelisted
Quick ref to get rid of Google Ads (and some others too) on Adblock Plus:

FOR CHROME:

Go to "Settings"

Find Extensions in the list on the left

Find AdBlock, select "Options"

Click the tab "Filter Lists"

Uncheck: "Allow some non-intrusive advertising"

FOR FIREFOX:

Go to the Firefox menu in the upper left corner

Select "Add-ons"

Select "Extensions"

Find Adblock Plus, select Options.

Find the "Filter Preferences" Button

Select the tab "Filter Subscriptions"

Uncheck: "Allow some non-intrusive advertising"

jpdoctor··on Statement on planned Fourth of July demonstrations
> "NSA does not object to any lawful, peaceful protest."

I think you missed the key point of the verb "object": Whether they object or not is immaterial to whether they are going to mark the protesters for additional NSA scrutiny of phone calls or email.

jpdoctor··on How the NSA taps fiber at the bottom of the oceans
> Doing it to a bundle of fibers in the deep sea is challenging!

It is also detectable: Long haul folks sometimes pull up the cable to service it for various reasons. So they pull it up and see a zillion fiber taps? WTF?

And where does that cable tap go?

To your bigger point: Yes, this article has zero explanation of how it is done. The salient sentences are:

However, light signals can not be read in another way. Therefore you have so far to expose and turn that a small part of the light waves emerging from the fiber, the individual glass fibers. If you immediately reinforce these waves again and transported via another cable, it has diverted the data.

To anyone in fiber comm, this language is pretty much gobbledegook. Any chance the pastebin is a translation? It vaguely sounds like someone is describing a fiber tap, but in such confused language as to make it sound like a bad spy novel.

Edit: I should have read through the thread. It is a translation: https://news.ycombinator.com/item?id=5982681

jpdoctor··on How the NSA taps fiber at the bottom of the oceans
> No, they are probably using evanescent wave technology.

This is not a term used in fiber comm. The wave traveling down the fiber has a "mode", and part of it extends beyond the core. Yes, that part is evanescent, but it is part of the mode solution from Maxwell's equations.

All you've done is restated OP's explanation of how a fiber tap works.

jpdoctor··on Winklevoss twins to offer Bitcoin ETF
Yes, I didn't want to complicate the issue. In order to keep the admin costs low, the ETF demands that blocks of shares be redeemed at once. (for example: The gold ETF GLD requires 50K shares be created/redeemed at once, iirc.)
jpdoctor··on Winklevoss twins to offer Bitcoin ETF
> in principle no reason it couldn't be done.

I'm not suggesting otherwise. I am pointing out that a genuine, fast mechanism for shorting needs to be available in order for the ETF price to track the underlying. That mechanism will take quite a while before there is enough confidence for market participants to have faith in the ability to short.

jpdoctor··on Winklevoss twins to offer Bitcoin ETF
> if the ETF can be redeemed freely

Not just freely, but without any substantive delay.

> If the ETF price is $60/BTC and the spot is $85/BTC, there's a huge incentive for investors to buy ETF and redeem and then sell in the spot market, even if it takes days.

Once you think this through, you will come to the conclusion that the mean-squared deviation of the (spot-ETF) is related to the speed at which the shares can be redeemed. Modern investors quickly lose faith in any derivative that does not track the underlying.

If you want an example: Shorting of bank stocks was banned by the SEC during the Lehman meltdown. The bank index ETFs went nuts, and the levered ones never really recovered. (See SKF. Those of us who predicted the meltdown made a lot less money because of it.)

jpdoctor··on Winklevoss twins to offer Bitcoin ETF
https://news.ycombinator.com/item?id=5975704
jpdoctor··on Winklevoss twins to offer Bitcoin ETF
It's clear that many folks don't understand how the price dynamics of ETFs with underlying securities operate.

A share in an ETF is a fixed basket of securities. If the price of the ETF differs from the basket, the ETF share creation/redemption mechanism drives the price back to the fair-market value of the basket.

If the price of the ETF share is too high: Market participants will short the ETF and buy the underlying. They will then take the underlying to the ETF admin, who will then create shares thus closing out the short.

If the price of the ETF share is too low: Market participants will buy the ETF and short the underlying. They will then take the shares to the ETF admin, who will then redeem the ETF share for the underlying, thus closing out the short.

Without the ability to short the underlying, there is no mechanism to maintain equilibrium in the share price of the ETF.

jpdoctor··on Winklevoss twins to offer Bitcoin ETF
> * Perhaps they personally will provide liquidity for this ETF.*

That sounds suspiciously like "unloading".

jpdoctor··on Winklevoss twins to offer Bitcoin ETF
> Following that, liquidity.

There needs to be an effective method of shorting in order for the ETF to be effective. I think it will take much more than a year.

jpdoctor··on Statement from Edward Snowden in Moscow
I'm not judging, I'm providing the text for the Article he referenced in his statement.
jpdoctor··on Winklevoss twins to offer Bitcoin ETF
> Anyone know how to estimate whether there's enough liquidity in existing bitcoin exchages to support it, and allow them to track the price accurately in the ETF?

Yes. The daily volume in the ETF must be a small fraction of the daily volume in the underlying asset, and it must be possible to both buy & short the underlying.

So net net: An ETF is incredibly premature. This is the Winklevii taking serious advantage of folks who don't understand ETFs in depth.

Edit: Clarified the relative quantity.

jpdoctor··on Statement from Edward Snowden in Moscow
> What is the difference between asking for extradition and pressuring to deny asylum?

Asylum is considered a basic human right. I've posted elsewhere: https://news.ycombinator.com/item?id=5974330

jpdoctor··on Statement from Edward Snowden in Moscow
Article 14 - Universal Declaration of Human Rights

Everyone has the right to seek and to enjoy in other countries asylum from persecution.

This right may not be invoked in the case of prosecutions genuinely arising from non-political crimes or from acts contrary to the purposes and principles of the United Nations.

http://www.ichrp.org/en/article_14_udhr

jpdoctor··on When Italians chat, hands and fingers do the talking
I grew up in greater NYC in an area with many immigrants, and I am myself the grandson of Italian immigrants. A teacher in high school jokingly challenged us to sit on our hands while we talked. Without thinking about it, I found myself lifting my butt to free my hand in order to make a conversational point and then sticking my hand back under. Repeatedly.

Much laughter ensued.

Anyway, it seems that the habit transferred to the new world without anyone really trying.

jpdoctor··on Startup Investing Trends
Since the money supply (M2, eg) includes the monetary base (M0), the link is confused (at least about nomeclature.)

Monetary base in red (you can see where they started printing in the past few years), Money supply in blue http://research.stlouisfed.org/fred2/graph/?g=kcD#

jpdoctor··on Startup Investing Trends
I'll add a major forward-looking issue: The Federal Reserve has been issuing free money, and that party is over.

It won't affect the next A or B rounds, but exits in about 3-5 years are going to dry up much like they did the last time the Fed tightened.

jpdoctor··on No free trade agreement if charges of espionage are true, warns EU Commissioner
> Maybe, just maybe, this might get the US government to stop, or at least drastically limit its spying operations.

And the irony would be that the US needed foreign gov'ts to accomplish what its own citizens could not do.

← PreviousPage 2 of 34Next →