This is some really great stuff. One of my favorite parts of working in software/computers is "figuring stuff out". My brain always nags "there has to be a reason for this" ... and doesn't let go until I really understand what that reason is. That drive to understand the why (and not "magic") has led me to understand things like JVM garbage collection, ntp (network time protocol), HTTP, vector graphics, and on and on. Great stuff!