I think it is the act of scrolling or window-switching or head-moving that is the cost. To that end, I find using a MBA screen to be perfectly adequate for prog

I think it is the act of scrolling or window-switching or head-moving that is the cost. To that end, I find using a MBA screen to be perfectly adequate for programming because it fits entirely in my field of view. My screen is about 55 lines tall and maybe 170 characters wide. I sometimes shrink or increase the font slightly to make programs fit on screen.