HNHacker News
TopNewBestAskShowJobs

xpda

120 karma · joined September 23, 2011

submissionscomments
xpda··on Checklist of Rationality Habits
Sometimes I rationally realize that I am making an irrational decision, but I still prefer the "wrong" decision. For example, I may pick up a dirty penny in a street. The risk/reward is negative because the very slight possibility or disease or accident outweighs the very slight financial reward, but I prefer to pick up the penny anyway. Am I rational because of the analysis, or irrational because I make the wrong choice?
xpda··on Nepal Standard Time
Interesting! There are no airports in that area. The time zone is named Danmarkshavn time zone. Danmarkshavn is a weather station in the zone with a permanent population of 8.
xpda··on Cancer Is More Bad Luck Than Bad Behavior, Study Says
Different cancers are different. Skin cancer, both basal cell and melanoma, is usually caused by the sun. Other cancers have a very strong genetic correlation. This study did not consider the most common cancer in men, prostate cancer, or breast cancer. It's interesting that random cell division is such a strong factor in cancer, but it is completely incorrect to say that luck has a bigger effect than behavior for all types of cancer.
xpda··on F-35 stealth jet 'will not be able to fire its guns until 2019'
The longer before its operational, the sooner its deployment will be replaced or reduced by UCAV (combat drones). Technology will make it economical and tactically advantageous for unmanned aircraft to replace manned fighters and bombers in many situations. It will be interesting to see how autonomous they become.
xpda··on Something New in Garage Doors
It looks like there would be a lot of stress holding the doors up. I can only see the arm on the side, and at that angle it looks like it would not be very strong. I wonder about the longevity. But they do look cool!
xpda··on Why we love repetition in music
The sequence "sometimes behave so strangely" exhibits syncopated notes on a diatonic scale, 2/4 type meter, and a progression that adheres to chords of a melody. It seems unlikely that something this musical would often appear in normal speech, never before noticed.
xpda··on Airbus patents aircraft cabins shaped like doughnuts
It should not be patentable, but, unfortunately, the bar is very low at the moment.
xpda··on Ask HN: How to escape from mediocrity?
1. Work at your full potential. Top mental work requires significant time uninterrupted by texts, phones, humans, etc. It also requires sleep and is inhibited by alcohol and drugs. You can get by with less or poor sleep, but you won't perform at your full potential.

2. Don't waste time on office politics or squabbles. Express your opinion with superior work.

3. Think things through. Like chess, think a few steps ahead before you decide on a course of action. Put yourself in the position of others -- clients, users, associates, and competitors.

xpda··on Can undergraduate admissions officers tell if you aren't actually a good coder?
Tom Stagliano's makes the point. It doesn't matter. Coding is a tool to use at the university level, not the goal of education. In addition, coding can be learned at the university and is not necessary for admission.
xpda··on Illustrated Sorting Algorithms
Points deducted for incorrect O's. Quick Sort is not O(n log n), and merge sort is not O(n^2)
xpda··on A Face Recognition Algorithm That Outperforms Humans?
The paper is really interesting, but a lot of the references have been omitted.
xpda··on Programmers' Proverbs (I'd love some input)
"Learning obscure and strange languages, yields better understanding and broader horizons" does not, need a comma.
xpda··on Square Market Accepts Bitcoin
It has always been a taxable event. If you buy anything and sell or trade it for a profit, you owe income tax (in the U.S.), be it gold, water, wheat, or Hungarian forints. The IRS just confirmed that bitcoins are assets and not currency, which has a few different rules.
xpda··on Earth dodged a massive magnetic eruption from Sun that could have wreaked havoc
1. It depends on who "we" are. For almost everybody, it would be a non-event but for the hype in the media. Electronics would not be deep fried. Some damage would occur to satellites, but few would be permanently affected.

2. "Impact" would be from the sun. The magnetic effect can wrap around the earth to some extent.

3. Most "infrastructure" would require no shielding. The atmosphere does a good job, except for certain circumstances.

4. No hard drives would come close to being wiped by the CME, even it was directed at earth.

This CME was rated about 80 nanoTesla. The "Carrington Event" of 1859 was about 50 percent stronger. This CME is notable primarily because of its speed, not its size or destructive potential (except when used for selling newspapers).

xpda··on Two Generals' Problem
Right! Forget the slow, unreliable upload. Overnight a USB drive.
xpda··on Show HN: What's my browser?
When I tried Opera, it returned Chrome 31.
xpda··on Mt. Gox leak rumor
It is possible that MtGox lost its money by dipping into deposits and pending cash withdrawals for its own use. Then, maybe some bad investments snowballed and they couldn't recover.

This seems more likely than someone hacking them and ripping off hundreds of millions of dollars worth of bitcoins without them noticing.

There is regulation that prevents this (most of the time) in banks, but in an unregulated exchange it would be easy (and stupid) to start gambling with customer deposits and pending withdrawals.

A few months ago I set up a MtGox account, and noticed the MtGox policy of taking weeks or months to wire the proceeds from a bitcoin sale. That seemed like a red flag, and made me wonder what they're doing with the cash between the bitcoin sale and the wire transfer. I'm glad I opted out of MtGox.

xpda··on The programming error that cost Mt. Gox 2609 Bitcoins
This is not the only or even the primary problem with MtGox. There are fundamental control shortcomings, among various tech problems.
xpda··on It's time to break up the NSA
No need to break them up. They just need their virtually unlimited budget cut to the neighborhood of 1995 levels. A gas expands to fill its container. A political organization expands to fill its budget.
xpda··on We Are Giving Ourselves Cancer
We are giving ourselves cancer when we spend time outdoors without sunscreen or other protection.
xpda··on Ask HN: What are your 2014 Predictions?
1. Stock market: up.

2. Economy (U.S. and world): up.

3. Political polarization: up.

4. Stupid-patent lawsuits: up.

5. World violence: down.

xpda··on Why Did Japan Surrender?(2011)
The U.S. expected to (and was prepared to) drop several atomic bombs before Japan surrendered. Even so, some of the Japanese hardliners tried to kidnap the emperor so he couldn't surrender. ("The Rising Sun", John Toland)
xpda··on A search engine that removes the 1 million most popular web sites from its index
This was easy to fix before Google broke their personal exclusion lists. You used to be able to block a set of sites from your Google searches. I guess Google figured out they were losing potential advertisers.
xpda··on Dear Googles: Stop asking
Google search has become fuzzier over recent years. When I look for something technical, I almost always have to go back and put quotes around the terms, because Google prefers to display a different search for more common, related terms.

This brings up the Google Interface. I used to be able to use + in front of a term I wanted to be treated literally. Now I have to use quotes, which is 4 keystrokes (including shift) instead of 1 for plus.

Google also has removed my ability to block certain URLs from your search results. Now I cannot avoid the re-linker web sites, and occasionally get suckered into clicking one. That is really irritating.

In spite of this, Google still provides the best search I've seen. I recently compared Google and Bing in an obscure search. Google had 45 hits, Bing 15.

xpda··on How I Almost Lost Every Family Photo I Have
Mine too. I'm still unclear on how OP lost the photos in the first place.
xpda··on Poll: HN readers, where's your residence?
Pryor.
xpda··on Google releases a fix for flash, before Adobe
I think there is a solution to this on the iPad and Windows 8 (Metro UI).
xpda··on Size is the best predictor of code quality
I just cut my Visual Studio font size down to 6, but my code runs the same.
xpda··on Ask HN: How do competition patents affect something you're currently working on?
Only if you're building a snowman.
← PreviousPage 2 of 2