> 5. If your work is done on a computer, get a second monitor. Less time navigating between windows means more time for thinking. I really don’t do well with a second monitor, because humans suck at multitasking. Invariably slack or email end up on the second monitor, not real work. Better advice IMO: don’t task switch, stay in the shell as much as possible. Serialize your work to the limitations of human attention
And then the thought that comes up, of course, is, don't copy or verify data that way. Automate it.
I used to use three huge monitors at work, but since working at home during Covid I've found that I not only like typing on my HP laptop's built-in keyboard better than on my full-sized mechanical keyboard, but I mostly prefer just using the laptop's display to using multiple displays, and for exactly the reason you gave -- I'm better off automating things and serializing work from the command line. I've made aliases for opening the web sites I need from the command line and usually just kill them when I'm done with them, instead of using tabs. It really does have a kind of head-clearing effect.