Wired latencies are more limiting than you would expect! Light in glass in 2/3rds of that in a vacuum. At 2*10^8 the longest straight arc on earth would take 100ms to traverse in fibre optic cable.

Latency caused by the speed of light is a tangible and impactful factor in our lives!

It's amazing that something so incomprehensible (3x10^8 m/s) can actually be experienced.