I disagree. I use boxes and lines all the time, on paper, when programming. I think in boxes and lines. I briefly wrote some Max/MSP visual code some years ago

I disagree. I use boxes and lines all the time, on paper, when programming. I think in boxes and lines. I briefly wrote some Max/MSP visual code some years ago and I found that I no longer needed to do it on paper, because thinking directly in Max was enough.