I agree for a lot of activities multiple monitors doesn't help that much, but there are some. The most obvious is web dev. Whenever I get into heavy front end w

I agree for a lot of activities multiple monitors doesn't help that much, but there are some. The most obvious is web dev. Whenever I get into heavy front end work I end up wanting 3 displays: (a) IDE/primary editor (b) actual browser UI and (c) the browser dev console. These all need to be on screen at once because of how iterative and feedback driven the process is ("nudge the button 2 pixels to the left, no 3, no 2, now click to invoke the dropdown, why is the padding wrong" etc).