I think the lack of distractions on a dos computer may be another inadvertent advantage of using an old computer. Even more so than we non-authors may think.

Cal Newport’s blog has many interesting stories about writers retreat’s. This seems like a sanctuary, whether intentional or not.

Update: I’m writing a text book right now. I can tell you that publishers do not bend over backwards to accommodate non-standard tool choices (Dropbox Paper in our case). The more you include Microsoft word in your workflow, the easier it will be.