Barry, welcome home. Hope trip went well and the ship was illness-free.
I think Ed's point is that physically the only difference between a terminal block and a buss is the length between the drops--in a terminal block, it's an inch or less, but in a box it can be much longer. The terminal blocks we use are not single point, as where many wires are twisted together at a single point. Ed is not addressing what flows through the cicuits, just the physical layout.
But now that you raise it, just what is a data packet composed of? Is it not a flow of electrons transmitted in bytes of 8 bits each?
