I want someone to make a video series where they exceed cable lengths and show what happens.

what happens if you have a 2km USB cable? what works and what breaks?

@foone at what point does lightspeed delay become a problem?
@WizardOfDocs @foone fibre channel actually has a parameter where you can tweak the system by indicating how many packets are currently on the fiber between the two switches. Transmission speed is so high that the packets are short enough to fit a good dozen on several km distance.