### Math: Sierpinski's Triangle is a Variation of Pascal's Triangle

Here's a picture of Pascal's triangle from Wikipedia. It's animated just in case you don't remember how Pascal's triangle is created:

Here's a picture of Sierpinski triangle, also from Wikipedia:

You can see in the top image that to calculate a spot in Pascal's triangle, you just add the two above spots. To get Sierpinski's triangle instead of Pascal's triangle, you just xor the above two spots. Cute trick, eh?

I learned this trick while reading Concepts, Techniques, and Models of Computer Programming, which is a fantastic book, by the way. Here's my Oz code for printing out Pascal's triangle:
`% This is a generic version of Pascal's triangle that let's you specify the% operation instead of just using "+".declare GenericPascal OpList ShiftLeft ShiftRightfun {GenericPascal Op N}   if N==1 then [1]   else L in      L={GenericPascal Op N-1}      {OpList Op {ShiftLeft L} {ShiftRight L}}   endendfun {OpList Op L1 L2}   case L1 of H1|T1 then      case L2 of H2|T2 then  {Op H1 H2}|{OpList Op T1 T2}      end   else nil endendfun {ShiftLeft L}   case L of H|T then      H|{ShiftLeft T}   else [0] endendfun {ShiftRight L} 0|L enddeclarefun {FastPascal N} {GenericPascal Number.'+' N} endfor I in 1..10 do {Browse {GenericPascal Number.'+' I}} end`

### Drawing Sierpinski's Triangle in Minecraft Using Python

In his keynote at PyCon, Eben Upton, the Executive Director of the Rasberry Pi Foundation, mentioned that not only has Minecraft been ported to the Rasberry Pi, but you can even control it with Python. Since four of my kids are avid Minecraft fans, I figured this might be a good time to teach them to program using Python. So I started yesterday with the goal of programming something cool for Minecraft and then showing it off at the San Francisco Python Meetup in the evening.

The first problem that I faced was that I didn't have a Rasberry Pi. You can't hack Minecraft by just installing the Minecraft client. Speaking of which, I didn't have the Minecraft client installed either ;) My kids always play it on their Nexus 7s. I found an open source Minecraft server called Bukkit that "provides the means to extend the popular Minecraft multiplayer server." Then I found a plugin called RaspberryJuice that implements a subset of the Minecraft Pi modding API for Bukkit s…

### Creating Windows 10 Boot Media for a Lenovo Thinkpad T410 Using Only a Mac and a Linux Machine

TL;DR: Giovanni and I struggled trying to get Windows 10 installed on the Lenovo Thinkpad T410. We struggled a lot trying to create the installation media because we only had a Mac and a Linux machine to work with. Everytime we tried to boot the USB thumb drive, it just showed us a blinking cursor. At the end, we finally realized that Windows 10 wasn't supported on this laptop :-/I've heard that it took Thomas Edison 100 tries to figure out the right material to use as a lightbulb filament. Well, I'm no Thomas Edison, but I thought it might be noteworthy to document our attempts at getting it to boot off a USB thumb drive:Download the ISO. Attempt 1: Use Etcher. Etcher says it doesn't work for Windows. Attempt 2: Use Boot Camp Assistant. It doesn't have that feature anymore. Attempt 3: Use Disk Utility on a Mac. Erase a USB thumb drive: Format: ExFAT Scheme: GUID Partition Map Mount the ISO. Copy everything from the I…

### ERNOS: Erlang Networked Operating System

I've been reading Dreaming in Code lately, and I really like it. If you're not a dreamer, you may safely skip the rest of this post ;)

In Chapter 10, "Engineers and Artists", Alan Kay, John Backus, and Jaron Lanier really got me thinking. I've also been thinking a lot about Minix 3, Erlang, and the original Lisp machine. The ideas are beginning to synthesize into something cohesive--more than just the sum of their parts.

Now, I'm sure that many of these ideas have already been envisioned within Tunes.org, LLVM, Microsoft's Singularity project, or in some other place that I haven't managed to discover or fully read, but I'm going to blog them anyway.

Rather than wax philosophical, let me just dump out some ideas:Start with Minix 3. It's a new microkernel, and it's meant for real use, unlike the original Minix. "This new OS is extremely small, with the part that runs in kernel mode under 4000 lines of executable code." I bet it&…