A Reflection on Modal Realism

There's a possible world
in which the same number of cars are in each lane. 
Some merge left, others right—
no traffic.

There's a possible world
for every millisecond of your life in which you die. 
No angels
have time to show you their aftermaths.

There's a necessary world
in which matter in connected through gravitational strings.
No windows,
no breaths to fog them.