Going from HDMI 1.4 to 2.1 there is a 5x increase is bandwidth. Is it because the cables themselves were never the issue but it was the connectors/chips in the devices themselves that couldn’t handle it?
I know part of it is the actual quality of the cables themselves and tighter tolerances, more twists in the wires, material purity, etc. but I can’t imagine that alone would be enough to fully account for this.
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The same reason that modern cars can go faster on a road built in the standards of 1923 than 1923 cars could…because modern cars are faster, and the road isn’t limiting them.
Or a more apt comparison: cell phones keep getting faster, but the air they transmit through is the same. It’s because the phones and the base stations are improving, and any limitations of the medium are either not limiting, or they’re able to work around them.
How do they do this? Well, returning to the car analogy, imagine you want to increase throughput on a highway, but you just can’t make the road any bigger. And you can’t make the cars faster, because they’re already moving at the speed of light. What do you? Maybe make the cars smaller, so you can fit more lanes in. Or stuff more people in each car, so more people get to their destination per unit time. Maybe even make it so cars can drive on top of each other–a three-dimensional road can hold a multiple of what a two-dimensional one can.
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