[dionidium]

> - A family of 15 is still two parents, who count as two votes, not 15.

As a sort of meta-point: it’s never useful to point out the ways in which analogies fail in this way. [0] You know exactly what is meant by the analogy, as does everyone else. This isn’t responsive or helpful. All analogies are leaky.

In general, I’d encourage you to try to find the ways in which an analogy may elucidate. Anybody with an ounce of motivation can note the ways in which they don’t. If you start with that motivation, you’ll succeed every time, to no particular end.

[0] All this does is send us into a back-and-forth where I shore up the analogy by specifying that the 15 are all adults, and then specifying that, yes, in this neighborhood that's allowed, and so on, until eventually we've hashed out every pointless detail of the electoral system in this fictional town.