News for hackers. Stuff that matters.

bulltale

Re:All Hacker News Evergreen Stories Ordered by Score on Monday November 17, 2014 @03:16PM (#8620256)
I'd love to see such a list. I am anxiously awaiting your "Show HN" submission, scott_s!
Related, although a different use case: http://www.ampelmann.nl/
Good for Blendle! Not the first Dutch start-up to be funded by US investors, but one of the most well known (in the Netherlands anyway).

As far as I am aware, there is no US-based Blendle yet? (An article aggregator where you pay per article). If so, they have a large market ahead of them!

Re:Skunk Works Reveals Compact Fusion Reactor Details on Wednesday October 15, 2014 @11:03AM (#8458770)
In addition, in the step before where the heat is transferred away from the reactor walls to the turbines, a heat flux is needed of 100MJ/s. Assuming a contact surface of 100m2, that is 1MJ/s per m2. That sounds like a huge flux and I am not sure if there is any medium that could do this.

Or are my assumptions way off?

Re:Paul Graham and Jessica Livingston Interview [video] on Friday October 10, 2014 @02:25AM (#8436507)
It looks like the interview parts were mixed up in the editing. To watch the interview in chronological order start at 13:44, watch till the end and then start from the beginning.
Re:Liberia signs 'transformational' deal to stem deforestation on Tuesday September 23, 2014 @10:27AM (#8355472)
The fraction is 0.00021. The percentage is 0.021%. Still small though.
Re:Andreessen Horowitz Raises New $1.5B Fund on Thursday March 27, 2014 @04:18PM (#7483147)
Fred Wilson gave a nice overview.[1] Indeed not much better than other investments.

[1]: http://avc.com/2013/02/venture-capital-returns/

Re:Show HN: Hubble Ultra Deep Field Viewer on Saturday January 18, 2014 @08:53AM (#7080992)
Nice, although I'd like some more explanation about what I see.

When I click the hint for the oldest object in the universe I get: [object Object], with the URL: javascript:Zoomers.map.setView([79.39604189337487, -122.98095703125], 5)

Re:Ask HN: Have you remapped the Caps Lock key? [Poll] on Friday December 27, 2013 @05:02AM (#6970101)
On my Macbook Air I have remapped the eject key to forward delete.
Re:BlackBerry puts itself up for sale on Monday August 12, 2013 @02:52PM (#6200937)
I haven't used BB10 yet, but I am willing to believe you. However, I think the issue is that success on the mobile OS market is determined in a large part by the ecosystem around it. The ecosystem is heavily influenced by network effects (i.e. the more users, the higher the value of the network) en BB is way behind in this aspect. They still have many users but the amount of apps pale in comparison to Apple and Android. If Apple, Android, Windows and BlackBerry would all have started at the same time, we would have seen different results (maybe). But the simple fact remains that BB is very, very late to the game. And once market dominance is reached, as Apple and Android have, competitors can only change that dominance by being dramatically better. And I get the impression that BB10 is somewhat better.

And that is not enough.

Re:3D Printer for less than $400 on Thursday May 30, 2013 @04:35PM (#5795046)
This is of course part of the risk associated with Kickstarter, projects may fail or be delayed. As you seem to be an avid backer, do you feel satisfied with the general delivery of projects you backed?
The story Businessinsider refers to is at Businessweek:

http://www.businessweek.com/articles/2013-03-28/how-samsung-...

Re:Better Place to file for bankruptcy on Sunday May 26, 2013 @03:47AM (#5770383)
My initial reaction is that this is a turning point in electric car technology. If there was one company suited to take the role in battery swapping like Tesla did for electric cars in general, it was Better Place. With them gone, and battery technology rapidly improving, battery swapping for consumer cars may never take off.
Re:Introducing Graph Search on Tuesday January 15, 2013 @03:39PM (#5062837)
From what I recall you can stop friends from tagging you in photos on FB.
Re:Should error messages apologize? on Saturday January 05, 2013 @09:16AM (#5012668)
There is fine line between creating a positive experience for the end user, and suggesting a positive experience. Some examples:

Cars: No, cheaper car makers will not degrade the experience, but they will direct less attention to the perceived experience by the end user, also because their margin is lower. Your point about the audio plug: It annoys me too, but this depends on the target audience. Do they value an audio plug over a clean dashboard? Toothpaste: Here a false claim is made. That does not convey respect to the user at all.

What complicates these discussions is that, for example on HN, they are discussed with people who often value features over a smooth experience. But I argue, that for the average high income user, the experience, the treatment is an important factor, next to features.

And to come back to the OP, treating your users properly will enhance the value of your application to this group.

Re:Should error messages apologize? on Saturday January 05, 2013 @08:54AM (#5012622)
Yes, we should, but my trail of thought tried to address the deeper (or tangential) rationale for humanized error messages. My argument was that if you humanize error messages, you are increasing the service towards your end user. You convey a message that says "I see that something limits the use of the application, how can I help solve this".

In general, the hierarchy of error prevention and solving should be this:

0. Treat the end user as a normal human being (obvious? well, I wish it was!)

1. Limit the steps a user has to take to a minimum, but no less then is required to execute the main goal of the application.

2. Focus steps as much as possible on doing something that satisfies a needed input by the user (i.e. minimize program management by the user)

3. Try to stop an error from happening before it occurs or asap. (Example: The stop sign when you drag a file in Windows where it can't be dragged, validation per form step).

3. When an error occurs, show a concise, friendly error-message, with is tells the user how to fix the issue or prevent it (if it can be done by the end user).

4. The level of apology should be linear to effect of the error: if the error makes the user feel disrespected, it stops him from finishing the task or delays him. (i.e. apologise a lot if you application crashes, but a little if an e-mail address does not validate).

Re:Should error messages apologize? on Saturday January 05, 2013 @08:10AM (#5012524)
I think there is a strong causation between the way products address their users (not only software, but also cars, appliances, physical forms), and the perceived value of that product.

Step into a luxury car and ask yourself, why do I see this car as luxurious? Sure, it looks nice, but it will also convey a message that says: "When we created this car, we really tried to make you feel comfortable, treated well and respected".

This might seem like over stretching the question in the link, but underneath lies the question: "How hard do we want to try to serve the end user".

Re:Ask HN: Technical pet peeves? on Sunday November 04, 2012 @09:20AM (#4739826)
At first thought I agreed with you. But then I realised, that is how many of those names started: they were the dominant brand for a while and thus became the household name. I hear many people refer to portable audio players as an iPod. I see no obvious difference for the iPhone, except that it has more competition.

This does not mean I agree.

Some ideas:

- Do the bookmarks have any extra info? For example the links to the HULU pages. Do they contain parameters (such as ?campaign=fb) which could point to the origin of the bookmarks? - Try to reproduce. Remove/save some bookmarks, and visit the same pages you visited before (esp. FB) and see if the bookmarks reoccur. - Use little netstat to monitor connections. See if you spot something odd. But this is an time-intensive method.

It can be spooky when odd things like these happen on your pc. But many times it is just a confluence of circumstances. You could see this as an incident - when it reoccurs, then you have something to research. At that moment, put it on superuser or the likes. Probably you get better answers then here :)

Re:The Most Revealing Job Interview Question on Thursday October 04, 2012 @02:17PM (#4613585)
Outstanding comment. Especially since you wrote it in 30 minutes.

Very interesting that the best tests still have a low validity.

Re:The Most Revealing Job Interview Question on Thursday October 04, 2012 @02:13PM (#4613563)
Paraphrased: Ask the applicant to explain any topic for 5 minutes to the one interviewing. Then the interviewer will draw a blank face. Talented applicants will ask the interviewer if he understands, less talented applicants will just continue their story.
Re:The Most Revealing Job Interview Question on Thursday October 04, 2012 @02:04PM (#4613518)
Very good question. This could not only apply to programmers, but anyone involved in communicating complex issues (medical personnel, engineers, etc).

On a side note, I do not read that many articles about the effectiveness of hiring. It certainly deserves more attention, because the good people in the right places is so important.

Start-up idea: Provide companies with interview questions for specific jobs, and then measure employee success/failure and use this to improve the process.

What's keeping you?
Hi methochris, I wish you much success. Let's meet again at the end of 2012 and tell us how you've done. Can you give us a hint of what you'll be doing?
Re:Ask HN: What apps are always running on your phone? on Wednesday September 26, 2012 @04:48PM (#4577949)
Apart from the usual suspects (Phone, Message, Mail, Safari): Whatsapp, WeekCal (Great calender replacement), Plaintext (Great notes replacement +dropbox sync), Dropbox, Alarmed (Great alarm + reminder app), Navigon plus the latest casual game I run (currently Modern Combat 3 (which still amazes me running it on a 3GS)).
Re:Tesla reveals Supercharger network, Free Fill Ups on Tuesday September 25, 2012 @02:00PM (#4571706)
This interesting. You say there is one reason airplanes fly. But "deflecting air downwards" is causing an lifting force by action=reaction (the way a rocket works) and "air pressure is higher on bottom of the wing than on the top" is causing a lifting force by pressure differences.

Those are different reasons, or am I mistaken here?

Re:Ask HN: Can you review my startup auth2.com on Tuesday September 18, 2012 @04:53PM (#4540445)
First, nice idea. Good to cater to niche market. You could build landing pages for these niche markets. "Secure your Drupal install in 5 minutes."

* The website is a little light on content. Maybe add some example implementations, use cases (in text, not everyone watches movies + good for SEO), FAQ. * Go through your website with a comb for spelling. F.e. on the main page "Two factor" must be "Two-factor". Also fix "You tap to accpept " * The mobile phone icon can use some polish. It looks somewhat like clip-art now. (Hope I don't offend anyone's work!)

Re:Ask HN: For the YC Application, is shorter or longer better? on Tuesday September 18, 2012 @02:44PM (#4539802)
I did not get in, so take my advice with caution.

I'd say, be as short and to the point as possible, without leaving out crucial details. Make your first point/first sentence summarize your whole application.

Look up the application of Drew Houston, founder of Dropbox, it gives you an idea of how he got in.

As a closing remark, your application is in the end not about being short or long. What you need to strive for, is convincing the reader, that the founders are capable, motivated persons, who can execute an idea to commercial success.

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