[markbrown00]

It seems to me that OF would be more 'trustworthy' as a GTD system if projects (and task groups) were set to parallel by default.

If you work with the 'available' filter on, then sequential projects effectively hide tasks that aren't the first task in the project. When doing my weekly review, again and again, i find tasks that have been hidden from me for the past week because I've forgotten to set a project to parallel (often because I've created the project from the project column, or by dragging a task group from the inbox into the project sidebar, then gotten sidetracked).

What do you reckon?