# Wednesday April 26th

## Completed

• Did this tutorial today.

## I did this one a while ago called “GnomeRave”, based on a first-person shooter tutorial, in Java.

I made the textures and stuff myself.

## Breakout cont’d…What I’d like to continue:

• In terms of the Pong/Breakout game, I started also with adding a second ball, but need to work out the mechanics, etc for it.

• Strangely, I remember my brother making this when we were younger. He probably used Java. :)

• Oh, and the bricks were made in Paint, pixel by pixel, etc.

## Also some notes on Hoare -> Homework done today

• I may attend a really interesting talk tonight for Papers We Love, in my local chapter. My mom (I know…I’m ten :) ) doesn’t want me to stay out too late, as I have a cold, so..we’ll see.

## It proposes:

Proposition 1:

• “The only meaningful physical events which occur in the world are represented by the evaluation of observables on states.”

Proposition 2:

• “Every observable can be regarded as a mapping from states to real numbers.”

## Hmm…

• Yes. Map -> Category Theory.

• He says “In its purest form, it is called ‘category theory’.

• “Category theory is a stratified or hierarchical structure without limit, which makes it suitable for modeling the process of modeling itself.”

## Things to get done

• C++ lab (with my partner). I believe it’s another game! :)

• Logic class new week opened up. Excited. It looks like there is some Hoare in there!

## Personal:

• I have a little bit of energy, because I’m getting better, and that can be a dangerous thing for me because I like working…a lot.

• I also bought this neat book a while ago. It arrived and I hope a few people at PWL can see it, perhaps, tonight. It’s on Number Theory. It’s called “Recreations in the Theory of Numbers”, and it’s by Albert H. Beiler.
• Why did you buy a random Mathematics book, Krystal? Actually, I’m hoping that I can not just understand some of the problems, but solve them computationally (ie using a programming language). That, and well, those kinds of books are very fun!

• I am also bringing Haskell stickers tonight for my group. Woop!

## Other TIL:

• I learned the Laws of Thermodynamics in high school, but never can recall learning about Onsager reciprocal relations.
Written on April 26, 2017