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There is absolutely nothing wrong with copper, it is one of the most sexy elements in the universe.
In the future of telecommunications it will play a decreasing role, however. Even though clever modulation and signal processing has extended its usefulness by a lot (who would have thought 20 years ago that you can transmit at rates of hundreds of megabits over two pairs of twisted doorbell wire?) - at some point up the bandwidth scale fibre cables become cheaper to produce, implement and maintain.
For the medium term I can see happy coexistence between copper and fibre for years to come.
Cheers
Steffen.
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