This is a pretty picture that has the word "code" on it. Enjoy. From Flickr: "Code 5," patrice-photographiste, CC BY NC.
This is my reflection week 23, which should be apparent by the title, but since I am feeling repetitive today, I will repeat the subject of this reflection: week 23. That just made no sense at all.
The world is such a depressing place. The clouds are especially dreary. Sigh.
Anyway, this week we did the playfair and hill ciphers. The Playfair cipher is done with a five by five square in which twenty-five different letters are in each of the boxes. One letter is left out. In Mrs. Krummel’s square in the notes, the letter j is left out. I think. The message should be separated into pairs of two. Then, the other two corners of the rectangle formed by the two letters on the square are the letters of the code. If they are in the same row, move everything a space right. If they are in the same column, move everything a space down.
The Hill system is endlessly more tedious, partly because of my distrust and refusal to use anything on the computer to decrypt or encrypt my messages. In the Hill system, separate the letters into pairs in a matrix and then multiply by the keyword matrix.
All state is this weekend, which means that I will be really busy with make up work until Tuesday. Which means I will start next week’s homework on Wednesday and never get it in on time on Thursday. This will be extremely embarrassing because Colin will probably finish everything on time and leave me behind.
Dona Nobis Pacem is a really slow song that I already learned but that has really long phrases that I can’t hold out without gasping for breath. I dislike the songs this year, two of which were the Florida All State songs a few years ago. Mehhh. Also, I don’t know how to pronounce “ich” in German.
Did you all listen to my version of “Both Sides Now” on my cryptology exchange website yet? I hope you did. I spent an hour and a half on that.
I hope Phil and Xiaolu enjoy decrypting my codes. The one that Xiaolu got was a bit harder, in my opinion, but Xiaolu is really smart, so she’ll probably get it anyway.
lovelovelove,
Cecilia 
Actually, I’m a procrastinator, so it shouldn’t be that much of a problem. I’d rather not be and struggle more in the short term.