Archive for the 'en' Category

Jack Delano 1943 colour photographs

Tuesday, May 15th, 2007

According to the text accompanying this photo on Shorpy, “[Jack Delano took about a thousand pictures] for the Office of War Information in March 1943, riding a freight [train] from Chicago to California. Most of them were in black-and-white. He used a Graflex Speed Graphic press camera that took 4×5 inch film.”  The ones posted on Shorpy (tagged Jack Delano) are mostly colour pictures.  They’re beautiful.

Greek mythology (2)

Wednesday, March 28th, 2007

Spotted Greek Gods Familiy Tree.  Thanks to Knuttz.

Greek mythology

Tuesday, February 27th, 2007

Ever since I attended grammar school, I’ve had an interest in Roman and Greek mythology.  Not an active interest, but the names and stories have this familiarity of some fond memories that makes one feel good.  Interesting place with lots of names and stories: Encyclopedia Mythica.

Games

Sunday, February 25th, 2007

I played Motherload the whole day with Miró today.  It’s about mining, starting with a small machine and making money to buy bigger gear.  I liked the game so much that Miró was allowed to play it all day :-)

Somehow Motherload reminded me of Elite on the BBC Micro.  The mechanism to make money is totally different, even when ignoring the difference in graphics, but the goal is the same: make money to buy bigger gear to make more money faster.  Not that I played Elite more than once, on a friend’s machine: my beeb had a Solidisk floppy drive interface and, iirc, that conflicted with Elite’s copy protection scheme.  Now, how much would a beeb-with-Elite cost on marktplaats?

How fast can you type?

Wednesday, February 21st, 2007

How fast can you type?  I do over 400cpm with 1 error! :-)

The Entrepeneur

Wednesday, February 21st, 2007

A beautiful question by Ross Mayfield: “How could we take more risk?”

The Google File System

Tuesday, February 20th, 2007

Interesting reading on the design of the Google File System.

More on IM2000

Monday, February 19th, 2007

I am getting the hang of this thinking about the problems of SMTP and how to replace it.  Ik like Some observations on the IM2000 proposal and spam by Brian Candler.  He observes things in the ideas of Jonathan de Boyne Pollard that I did not and some things that I did too.  Something that I thought was obvious but apparantly was not mentioned by Jonathan is this:

The whole point about sender pays for storage must be that:

  1. storage is controlled by sender and
  2. this is verified by recipient

The DNS can be used for this by looking up the message stores for the sender’s domain.

For message relays, this means:

  1. a mailing list is the originator of all mail it carries, at least at the level of the envelope^wnotification.
  2. you can’t forward notifications without rewriting them or wrapping them

 

The Economis of Spam

Thursday, February 15th, 2007

Interesting reference today in Bruce Schneier’s Cryptogram, back to an article from February 2004 on the Economics of Spam.  Reversing the economics is one of the (best) solutions: let the sender pay for email, or storage thereof.  This is the idea behind Internet Mail 2000 proposed by Dan Bernstein.

LinkedIn

Thursday, February 15th, 2007

I had some time to spare, so I created a LinkedIn profile. And installed wordpress :-)