Software didn't exist to replicate images when comics began their meteoric rise to popularity. Cartoonists drew everything by hand, staying consistent with their style and technical skill to make characters and scenery look the same every time. After repeatedly drawing the same characters, some cartoonists opted to see if they could continue doing so with their eyes closed. In 1947, a group of cartoonists decided to blindfold themselves and attempt to draw some of their best-known characters. With no way of seeing what marks they were producing on paper, they had to use muscle memory and a rough approximation of...