I had the same reaction to the toothbrush example, and feel the same way about electric toothbrushes. More than anecdotes, there are studies that demonstrate th

I had the same reaction to the toothbrush example, and feel the same way about electric toothbrushes. More than anecdotes, there are studies that demonstrate their efficacy. The criteria the author chooses for what gets downgraded weren't clearly enumerated, but I got the impression that it was because something was 'distracting.' I don't find my electric toothbrush to be a distraction any more than a manual. It seemed a bit arbitrary, like, I downgraded my car to this horse drawn carriage.