Abstract Heresies

Lawrence Botroff posted a set of questions and I thought I'd reply in my blog. I've read some of the discussions here, as well a...

John Cowan  wanted more detail.  If device drivers and bus cycles are not up your alley, I suggest you skip this post.  Seriously. Still h...

I occasionally get email about things I never thought I would have to remember.  Recently, I was asked how the LMI K-machine booted.  The sh...

Here's a way to quickly compute the leftmost digit of a number: (define (leftmost-digit radix n) (if (> radix n) n (let...

My college professors constantly encouraged us to "Go back to first principles." Consider a computing task that runs for some am...

I set my cell phone display-up on a flat surface (a table) and I turn on Google Maps.  I rotate the phone so that it "points north...

But it ought to be a necessary one. Suppose you were helping me write a TicTacToe program. I have this Java code so far: package com.vapo...