One thing I remember liking in this post was his personal homepage (a little further down). There has been a recent HN discussion of Glance, a personal dashboard, but Wolfram's seemed more effective.
If I could visually persist 3 lines of a terminal in my vision, and then otherwise use the functionality of a cell phone with ear buds with microphones, I think I could do 60% of my job while walking around in the forest behind my house. Most of the time I wouldn't need the terminal.
Do my cohorts, who have drifted into positions of tech lead, and then onwards as technical mentors to younger dev teams, find the same? I know I betray my communication style by admitting I don't need to see the screen; I prefer to see their world through a mental model built by words and sensing body language through tones and pauses. I'm not even sure I'm in the right line of work most days, at this point.