Connor Oliver still uses an old Macintosh Classic II:

This Mac has no form of notification system built in, it never begs for your attention and its applications never try to distract you from what you are doing, begging you to look at them instead. If I get distracted while using this Mac the fault lies squarely on me, not the computer and not the programs running on it.

I had an old MacBook that I used only for writing after replacing it with a newer machine for my daily work. The battery was dead, so I had to sit down near a power outlet when I wanted to use it. I hadn’t set up emails on this machine or installed any instant messaging applications, no code editors, and I didn’t transfer my audio files into iTunes. The only application I installed was iA Writer and some command-line tools so I could convert my writing from Markdown into other formats. The only thing I could do was to write and focus on words.

It was the most distraction-free computer I used in the past 20 years. I wish I had kept it.

(via Daring Fireball)