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Boy, I’m so glad you aren’t running med research, or people my family would be suffering, or dead.
The meds we have today were unthinkable 50,60 years ago.
Are there issues with the system? Yes, huge ones - I could write a book on them. But your attitude is frankly juvenile.
I’ve tested converting DVDs at different resolutions, and playing them on a 60" screen sitting 6’ away.
720 is just fine. I really can’t tell a difference between 720 and 1080, usually. Surprisingly.