So the PPD means we only need a factor of 2 denser pixels and we can throw all other 4K screens away. Wait for a factor of 3 higher PPD (~ 100?) and we may get

So the PPD means we only need a factor of 2 denser pixels and we can throw all other 4K screens away. Wait for a factor of 3 higher PPD (~ 100?) and we may get rid of all of our single-person-use monitors. I guess I'll wait for Vision Pro 4 to get the "retina display."