This is true. That said, if can’t tell the difference between 1080p and 4K from the pixels alone, then either your TV is too small, or you’re sitting too far away. In which case there’s no point in going with 4K.

At the right seating distance, there is a benefit to be had even by going with an 8K TV. However, very few people sit slose enough to benefit from going any higher than 4K:

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