Interesting to read about the (literal) bandwidth limitations on data rates. It's something I've been aware of but not fully understood for a long time. "Why can't you just turn the wave on and off faster", etc...
Instead of talking about the fundamentals like Fourier transforms, Shannon/Nyquist and wave propagation i usually refer to human speech: how increasing the rate of speech (signalling rate) comes with 1) substantial reduction in transmitting distance as the environment affects signal quality and 2) places a higher burden on error correction (interpretation of language) that is independent of the actual ability for the transmitter to create the faster speech.
Instead of talking about the fundamentals like Fourier transforms, Shannon/Nyquist and wave propagation i usually refer to human speech: how increasing the rate of speech (signalling rate) comes with 1) substantial reduction in transmitting distance as the environment affects signal quality and 2) places a higher burden on error correction (interpretation of language) that is independent of the actual ability for the transmitter to create the faster speech.