Geek knitting!

I thought I was the only programmer/knitter in the world, but no, like rocker/hacker ch1Xors, there is an active group of my odd demographic on the internet!

First of all, the awesome folks at KnitML have created a standard content model for knitting patterns, along with a pattern renderer, so you can get an idea of what your knitted object will look like from its pattern. I always thought that knitting patterns were computer program-like in style. And of course they should be: knitting machines need deterministic, procedural instructions. I always thought it was interesting how crafty folks, many of whom would probably claim they know nothing about writing computer programs, comfortably use control structures in knitting patterns.

Here is a great talk on the history of knitting in relation to computing/hacker culture, including open source patterns, knitting in public spaces, and how technology and the internet is shaping the state of the art.

Also, here is a roundup of geek craft from 2007, including knitting a space invaders scarf. Pixelated old video game images make good quilts and knits.

RFID tags in new $20 bills

Apparently this is not new, though it's new to me: new $20 bills have RFID tags in them, and when you microwave them, they explode! That's way more fun than microwaving AOL CDs. Link

So now a thief can not only determine remotely if you are carrying your US passport, he can also determine if you're carrying large bills. Awesome.

MSI Script vs Windows Security

I have recently been working on fixing bugs in my company's software installer (using Wise, hacking msi script), and have discovered some frightening things about how easy it is to do silent, invasive things during an install that Windows really shouldn't allow you to do.

1. Change the value of windows system registry values:

If you try to do this explicitly as a regular user (or without elevated privs on Vista), Windows will politely tell you that you can't. But if you execute the following MSI script during an installation (running the installation as a regular user), msiexec gets elevated priviledges, and can do whatever you want. Here's an example silently disabling UAC during an installation by launching regedit from cmd. (This is run in Wise via 'Execute Program from Destination', Working directory: SystemFolder):

"[SystemFolder]\cmd.exe" /c "[SystemFolder]\reg.exe" ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

2. Run a low-level system tool:

Similar idea, you can basically run anything you want from cmd. This example gives everyone full access rights recursively to a directory, not necessarily one that you own or have permissions to change. As long as it's run within msi, Windows lets you do it:

"[SystemFolder]\cmd.exe" /c echo y| "[SystemFolder]\cacls.exe" "[ProgramFiles]\DirectoryYouWantToMessWith" /T /G everyone:F

Yikes. I'm going to programmer hell for exploiting things like this as quick workarounds. The moral of this story is: be very careful about the random executables and installers you download from the internet. There's nothing preventing malicious users from using techniques like this to do arbitrary bad things to your computer.

Pennsylvania: still the land of pie

I visited my parents in Gettysburg, PA last weekend, and confirmed that PA is still the reigning Land Of Pie. Pumpkin, pecan, (my favorite), strawberry, rubarb... you name it, they bake it, then sell it at the famous annual Gettysburg Bake Sale, held at the local high school (where I managed to not have frightening high school flashbacks). So here we are doing a bit of shopping. After making the rounds of the pie and crafts with Claire leading the way, my Dad and I could barely see over our armloads of cookies and pie. Yes, this is what we call food from the heartland: meat, potatoes, and if you're good, pie.

Also at the bake and craft fair was a whole stand dedicated to lamps made out of cowboy boots. I guess there's not much else to do with turquoise cowboy boots.

There's also snow in PA. It's pretty. After living in Seattle for a few years (where, when it snows that one time per year, it shuts down the whole city), and CA for 4 months, I had forgotten about snow. While living in CA, I knitted myself a fabulous pair of fingerless gloves (perfect for the chilly office). But when I wore them in Gettysburg, random townsfolk would stop me on the street and say, "Hey now, those aren't real gloves! Don't yer fingers get cold?" No they don't, thank you very much, their hipness warms them from the inside out.

fractal jewelry!

Awesome: http://www.evilmadscientist.com/article.php/fimofractals

The Karl Denson Trio

Sacramento is not a hip place. It's a nice place- it has big trees, fancy houses, wide streets. The Governator keeps it safe and clean. But it's not generally the place to find cool new music. So I was pleasantly surprised last Wednesday when I went to see The Karl Denson Trio at Harlow's in Sacramento. It's been a long time since I've seen good jazz live.

The trio was made up of a drummer, sax/flute player, and keyboard player. They produced a huge sound for only three people. The keyboard player played two keyboards at once: he played the bass melodies on a Nord with his left hand, and funky gospel-y organ with his right. The driving melodies and harmonies were super tight, and the sax player and keyboard player had perfected a mysterious system for building up melodies while improvising over the course of the song. Sometimes the sax player would play the flute, and I've never seen flute played in such a bad-ass way. He literally had to wipe his face with a towel in between flute solos. Jason (the bass player in our band) said that he hoped one day to achieve the musical level of the keyboard player's left hand.

The Karl Denson trio had the whole crowd dancing on the floor. And these were mostly middle aged white guys in their "going out" tech teeshirts.

I think my favorite song was Lunar Orbit (it had a killer face-mopping flute solo), which is also the title track of their new album.

Grant got the memo

On Thursday we all had to dress up for the company photo. As you can see form this picture, Grant, the company mascot, got the memo.

How many engineers does it take to arrange a group photo? All of them. First everyone suggests all possible ideas for lighting, arrangement of people, location. Then everyone argues about the order in which to try all specified permutations, then the camera is accidentally set on 'auto' and takes 40 pictures of everyone arguing. 45 minutes later we had 100 photos of the team, the probability of having taken a good photo finally approaching 1.