PKLITE supplement 10: Two new versions

This post is part of a series on PKLITE. For an introduction, and a list of all the posts, see the first post. Recently, two new versions of PKLITE have been discovered: A 1.00 beta version with the self-reported date of "9-4-90" (that's September 4, 1990) PKLITE Professional v1.11 While I can't be sure, I …

Why not everyone on the left thinks trans women in women’s sports is always a great idea

Hey, check out that really big hornet's nest over there! I think I'll go whack it with a stick. Introduction Today I'm exploring the most important political issue of our time. Democracy versus dictatorship? Destroying the planet, versus not doing that? No, no, of course not. It's transgender women playing women's sports. One of my …

PKLITE supplement 9: Min/max alloc. part 4

This is Part 4 of my series on how PKLITE and the MINALLOC/MAXALLOC fields. Start with Part 1. For a list of all my PKLITE posts, see the first post. This will be a short update, to cover the formulas used by some PKLITE beta versions. Also, I'll summarize which versions use which formulas. Summary …

PKLITE supplement 8: Min/max alloc. part 3

This is Part 3 of my series on how PKLITE and the MINALLOC/MAXALLOC fields. Start with Part 1. For a list of all my PKLITE posts, see the first post. AX, continued In Part 2, I noted that, for v1.14 and higher, the "AX" field is sometimes increased by 80 (decimal, measured in 16-byte units) …

The boy born on Tuesday puzzle

Every now and then, some variation of this puzzle makes its rounds on the internet: You're given that a person named Mary has (exactly) two children. She tells you that one of them is a boy born on a Tuesday. What is your assessment of the probability that Mary's other child is a girl? It's …

The universe is very, very fine-tuned

Having watched more than a few creationism-debunking videos, mostly on YouTube, I've noticed a recurring phenomenon. The debunker competently addresses every argument the creationist puts forth… until the topic of fine-tuning comes up, at which point the debunker falls flat on his face, totally falling for the very same logical fallacies that he's in the …

PKLITE supplement 7: Min/max alloc. part 2

This is a follow-up to Part 1. For a list of all my PKLITE posts, see the first post. I've made more progress figuring out the formulas PKLITE uses to set the "host" MINALLOC field, and the "AX register" field. There's one major gap remaining, and it looks quite challenging, so I'll go ahead and …

PKLITE supplement 6: Min/max alloc., part 1

[This post is continued in Part 2 and Part 3.] This post is part of a series on PKLITE. For links to the other posts, see the first post. I've figured out a lot about how to decompress PKLITE-compressed files. One of the few remaining loose threads is how best to restore the "min alloc" …

Spacemaker executable compression

Spacemaker is an executable compression utility for MS-DOS executable files. It was developed by a company named Realia. (This post assumes you know something about MS-DOS executable files, and the concept of executable compression.) The most notable thing about Spacemaker is how old it is. A magazine ad confirms that it existed, in some form, …

The easiest unsolved math problem

Consider any prime number $latex p$. Compute $latex 2^{p-1}-1$. For example, if $latex p$ is 11, this makes 1023. Now take the number 1023 and divide it by $latex p$ (11). Do we get an exact integer? Yes, we get 93. (And we will always get an integer, by Fermat's Little Theorem.) Now take that …