When analysing a circuit we normally consider a wire to have the same voltage along its entire length. (There are two problems with this: voltage changes only propagate at c, and the wire has a resistance. Normally these are both negligible.) Thus we can view wires as taking a voltage and spreading it out along a line in space.

On the other hand, memory locations take a voltage and spread it out through time. So they are in some sense a wire pointing in the time direction.

Sadly, the analogy doesn't quite hold up. Wires have one spatial dimension but also h... (read more)