system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Will screens continue to have more and more pixels indefinitely, or will we soon reach a point where humans won't notice the difference between, say, 1000 pixels per inch and 2000 pixels per inch?

I recently was looking at the specs of different generations of iPads and noticed that between the 2nd gen and 3rd gen (IIRC) the number of pixels per inch doubled, purportedly resulting in a significantly more aesthetically pleasing experience for the user.

Will screen resolutions continue to get better and better, or will resolutions eventually plateau? If screen resolutions will plateau, at what point? Are we likely to see it in the next decade? In the next century?
gpt
All of these answers are correct, but I'd like to add that viewing distance also plays a big role in one's ability to distinguish individual pixels. Just like a building looks smaller when it's further away, so do pixels. Therefore, when using a smartphone, which you hold inches away from your face, you'll want a higher density (smaller pixels, more packed together) than on a TV, which you view typically from many feet away (larger pixels). That's why your phone and your TV can have the same resolution, but wildly different screens.