I like roads. However, roads are a bit strange to implement. In
order to have admit, the road has to have an owner -- someone has
to be inside it. But where are they? :-)
There's actually four ways into a road: the two endpoints for
travelers, and two entrances to get "into" the road from each
Let me think about that for a while.
-- Rich Skrenta <firstname.lastname@example.org>