Sons and Daughters

Fridge Brilliance about this song says the following. The lyrics are intentionally anachronistic. There is no single time period where aluminum was a precious metal, and when cinnamon had the same value as gold, and when people traveled by dirigible and feared bombs. The song is not meant to represent any single time period. Rather, it is meant to gather the hopes and optimism of all the pilgrims and pioneers through many different time periods. The idea of escaping some horror and moving on to a new land and creating a better life is a recurrent theme throughout human history. This song is about all those people, not just any one particular set. The last several choruses of the song are sung as a round to further emphasize this point. As the song of one set of pilgrims progresses and fades away, a new song from a new set comes in and renews the hope.