This BBC story explores the history of packet-switching:
. . . The problem with human speech is that most of it is made up of silence – be that the pauses between words, time taken to breathe or gaps when one person waits for another to speak.
Using most of a telephone network to transmit silence is not a very efficient use of that resource. Far better would be to find a way to fill the blank spots with the moments from others calls when those folk were speaking. . . . .
Link to full story.
My work box is a Lenovo Thinkpad T42p I bought from Emperor Linux in 2006 — maybe earlier than that. I don’t remember. There’s a receipt somewhere. It ran on Ubuntu Linux (Breezy Badger? Dapper Drake?) which I’ve dutifully upgraded. Its running on 9.04 (Jaunty Jackalope) now.
When the Thinkpad arrived, it had a special “empkernel” which made all the hardware run. When I upgraded, the empkernel was left behind. Ubuntu mostly kept the hardware running fine though.
Some exceptions . . . . This month, when I upgraded to Jaunty, the Atheros wireless card stopped talking to the OS. Horrors! I need that card. On the other hand, I had a new excuse to play with the bash shell. I dug out an old ethernet cable to get back on the net and began googling for solutions. Not much luck at first. . . .
Then I found Ubuntu Geek. Problems over. The wireless card problem?
Fixed here: http://www.ubuntugeek.com/new-madwifi-now-supports-ar2425-in-madwifi-trunk-branch.html
But wait! My wpa encryption support still isn’t fixed! No. Ubuntu Geek had that covered too . . .
http://www.ubuntugeek.com/enable-wpa-wireless-access-point-in-ubuntu.html
So. If you’re sort of a newbie like me to Ubuntu and spend waaayyy too much time googling around and not finding stuff, and you like using the command line, then my suggestion is to start with Ubuntu Geek next time.