You can keep on working when you need to record a task and they're recognized in a few formats, including:
Since tasks are in your files, you can sync them with cloud services like GitHub or Dropbox and record them while you're away
You can open multiple projects at once, each with it's own board. Your lists are determined by the tasks in your files or create empty lists to drag tasks into.
Search your project files or filter the tasks in your board so you can really focus!
Just an example so far, but the possabilities are endless. Here are some ideas. Maybe you'll write your own!