How far do you think Part 2 will go?

[mandelbrot86]

Oh, ok, I wasn't aware of all that. But can the human eye really tell the difference between 4k and 8k?

Depends on the size of the TV and how far you sit from it. Honestly, with most TVs today that are below 60 inches, you can't actually tell the difference between 1080 and 4K unless you are really close. The main reason 4K TVs look better with UHD Media is actually the HDR color depth rather than the improved resolution.