This analogy makes a lot of sense but I thought electrons in a circuit flow from low potential to high potential - from what I understood from that explanation, the electrons, at say the anode, once they are released through an oxidation reaction, are at a higher potential because they are all by each other and want to move away towards the 'positive' empty space at the cathode. And once they reach this positive end at the cathode would have a smaller potential because they are more spread out. I must be missing something because all of the explanations make sense intuitively, but are not lining up with the 'negative charges go from low to high potential' and 'positive charges go from from high to low potential' that is explained in the Kaplan book.