system
A chat on subreddit /r/pcmasterrace
human
Give it a generation or two. 

But I'm not budging from 4K until it becomes mandatory. I don't normally like LTT but he was right when he said 4K is already what Apple calls 'Retina' at a typical monitor viewing distance and the difference between 4K and 8K is unnoticeable to most people.
gpt
LTT video was eye opening to this.  Legit none of his people noticed the 8k difference.  4K really seems to be the pinnacle for human perception.