..#.#.....                                          ##.##..##.
.##.#.....                                          .#..#.#.#.
#.#.#....#                                          .#.##.#.#.
#.#.#...##                                          .#..#.#.#.
#.#.#..#.#                                          .#.##.#.#.
#.#.#.##.#    ;;                             ;;     .#..#.#.#.
#.#.#..#.#     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~      .#.##.#.#.
#.#.#.##.#     ##  mass-production treehouse  ##    .#..#.#.#.
#.#.#..#.#      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     .#.##.#.#.
#.#.#.##.#     ;;                             ;;    .#..#.#.#.
#.#.#..#.#                                          .#.##.#.#.
#.#.#.##.#    created in the twenty eighties as a   .#..#.#.#.
#.#.#..#.#   cheap and open source way of dealing   .#.##.#.#.
#.#.#.##.#  with constant floods and a rising sea   .#..#.#.#.
#.#.#..#.#                  level.                  .#.##.#.#.
#.#.#.##.#                                          .#..#.#.#.
#.#.#..#.# the "house" would consist of a stack of  .#.##.#.#.
#.#.#.##.#  floor modules, each a square of thirty  .#..#.#.#.
#.#.#..#.#  six square meters. these could be made  .#.##.#.#.
#.#.#.##.# out of various materials such as carbon  .#..#.#.#.
#.#.#..#.#  fiber or plastic, not necessarily the   .#.##.#.#.
#.#.#.##.#           same for each floor.           .#..#.#.#.
#.#.#..#.#                                          .#.##.#.#.
#.#.#.##.#  the house would be hung on a "mast", a  .#..#.#.#.
#.#.#..#.#   ridged metal pole extending between    .#.##.#.#.
#.#.#.##.# fifty and a hundred meters. a mechanism  .#..#.#.#.
#.#.#..#.#  within each floor would enable them to  .#.##.#.#.
#.#.#.##.#  climb up or down the mast, together or  .#..#.#.#.
#.#.#..#.#               individually.              .#.##.#.#.
#.#.#.##.#                                          .#..#.#.#.
#.#.#..#.#  the lowest floor would usually have a   .#.##.#.#.
#.#.#.##.#  loading dock, a balcony/front door, and .#..#.#.#.
#.#.#..#.#             various ladders.             .#.##.#.#.
#.#.#.##.#                                          .#..#.#.#.
#.#.#..#.#       ;;                        ;;       .#.##.#.#.
#.#.#.##.#        ~~~~~~~~~~~~~~~~~~~~~~~~~~        .#..#.#.#.
#.#.#..#.#       ;;                        ;;       .#.##.#.#.
#.#.#.##.#                                          .#..#.#.#.
#.#.#..#.#     % climate . housing . modular %      .#.##.#.#.
#.#.#.##.#        % suburbs . open source %         .#..#.#.#.
#.#.#..#.#                                          .#.##.#.#.
#.#.#.##.#                                          .#..#.#.#.
#.#.#..#.#                                          .#.##.#.#.
#.#.#.##.#                                          .#..#.#.#.
#.#.#..#.#                                          .#.##.#.#.