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Jessica Livingston: What Goes Wrong
This is my talk from 2012 Startup School, pretty much exactly as delivered. It's been more than 7 years since we started YC. In that time, we've funded 467 startups so I've seen a lot of patterns....
New
The latest blog posts to take off on Hacker News. 2,098 posts.
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Followup to "I bought more than 1 million Facebook data entries for $5"
Warning: According to Facebook you are not allowed to read this post, so beware.
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Python for Data Analysis
I recommend using Python for data analysis, and I recommend Wes McKinney's book Python for Data Analysis. I prefer Python to R for mathematical computing because mathematical computing doesn't exist in a vacuum; there's always other stuff to do. I find doing mathematical programming in a general-purpose language is…
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SSH key and passwordless login basics for developers
SSH keys are useful to login over ssh (secure shell) without typing a password. They are also used by Github and other version control systems for passwordless authentication. Here is some basic information from the software developer point of view how to use SSH keys for maximum comfort and security. These…
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The most dangerous code in the world
Abstract: SSL (Secure Sockets Layer) is the de facto standard for secure Internet communications. Security of SSL connections against an active network attacker depends on correctly validating public-key certificates presented when the connection is established. We demonstrate that SSL certificate validation is…
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Using python and k-means to find dominant colors in images
I'm working on a little photography website for my Dad and thought it would be neat to extract color information from photographs. I tried a couple of different approaches before finding one that works pretty well. This approach uses k-means clustering to cluster the pixels in groups based on their color. The center…
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How I automated the boring parts of life
I have a bad habit: waiting until the last minute to do things. Like, last month I had to fly to New York to run a 193 mile relay race. I knew about the trip for almost 6 months, but didn’t buy plane tickets until 3 days before, at 4x the cost. True ...
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The Hardware Renaissance
October 2012 One advantage of Y Combinator's early, broad focus is that we see trends before most other people. And one of the most conspicuous trends in the last batch was the large number of hardware startups. Out of 84 companies, 7 were making hardware. On the whole they've done better than the companies that…
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The rise of the “successful” unsustainable company
We're funding too many unsustainable companies.
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Mozilla blogger bought 1 million Facebook entries (full name, e-mail) for $5
I have the bloody habit to look for cheap deals on some websites and today I’ve got the featured offer to buy more than 1 million Facebook entries containing Full Name, e-mail and Facebook profile URL. I make a quick check over the data and surprise, surprise: most of them are real and I even know some of those users.
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Don’t mess with IBM
How companies like IBM intimidate employees and discourage them from speaking up.
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Mono 3.0 is out
Miguel de Icaza's Blog
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Introducing the USB Stick of Death
Several months back we have been playing with different file systems on various system platforms, examining the security posture and robustness of numerous device drivers’ implementations. One of the configurations we spent some time on was the commonly used NTFS on Microsoft Windows – as the file system is rather…
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Outlawed by Amazon DRM
Bekkelund.net er en blogg om teknologi, samfunn og politikk skrevet av Martin Koksrud Bekkelund
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The Backfire Effect
The Misconception: When your beliefs are challenged with facts, you alter your opinions and incorporate the new information into your thinking. The Truth: When your deepest convictions are challeng…
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Restoration of defocused and blurred images
Restoration of distorted images is one of the most interesting and important problems of image processing - from the theoretical, as well as from the practical point of view. There are especial cases: blurring due to incorrect focus and blurring due to movement - and these very defects, which each of you knows very…
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SiteChat: a postmortem. Or, the rise and fall of a society.
About a year ago I built a Chrome extension called SiteChat -- the premise was simple: turn every website into a chatroom. The app was an instant success, and over the following year I watched entire societies emerge and die off inside the bizarre ecosystem that I had created. Genesis and
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Google Voice lost my business number. How I got it back, and what I learned.
My Story of When Google Voice Lost My Number Google Voice lost my number August 12th, 2012, at around 5pm central time. I was able to log into Google Voice and check my messages at around 1pm that …
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Small
Looking down from his perch on the edge of space [http://www.youtube.com/watch?v=FHtvDA0W34I], Felix Baumgartner remarked: > Sometimes you have to be really high, to see how small you really are. It turns out that this feeling is a well documented phenomena dubbed the Overview effect [http:
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This Is Why They Call It a Weakly-Ordered CPU
On this blog, I’ve been rambling on about lock-free programming subjects such as acquire and release semantics and weakly-ordered CPUs. I’ve tried to make these …