Actually, that's 4 times the resolution, not 16: To increase the resolution of a 2-dimensional image by 4 times, you need 4 times as many pixels in each of the 2 dimensions, which means a total of 16 times as many pixels. I.e., the 16-fold increase in pixel count is what's necessary to get a 4-fold increase in resolution. So you can sit 4 times closer, not 16 :-).
“An engineer explained to us that hundreds of ear impressions were gathered in the name of research, and while each one obviously boasted its own unique shape and size, one single characteristic remained uniform across the board: the entrance into the ear canal is not a perfect circle, it's an oval.”
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Actually, that's 4 times the resolution, not 16: To increase the resolution of a 2-dimensional image by 4 times, you need 4 times as many pixels in each of the 2 dimensions, which means a total of 16 times as many pixels. I.e., the 16-fold increase in pixel count is what's necessary to get a 4-fold increase in resolution. So you can sit 4 times closer, not 16 :-).