When the legendary Admiral Grace Hopper would give a talk, she often handed out pieces of wire 11.8” in length, and educate her audience about the amount of time it took for electrons to traverse the length of the wire: 1/1,000,000,000 of a second, or, to round off a bit, electrons travel about one foot every nanosecond. In other words, it’s the same as the speed of light through free space.