I don't think it's hard to give credence to the thought that there perhaps is a natural boundary for responsiveness that, when crossed, results in vastly increa

I don't think it's hard to give credence to the thought that there perhaps is a natural boundary for responsiveness that, when crossed, results in vastly increased productivity. That's the idea here. This works for people with short or long attention span. The paucity of short term memory is perhaps made worse by attention span issues, but that's not the core issue.