if something is emitted at a reads then that something can be lost at that bird
throwing_flowers is not throwing. visual_reading is not reading. lost_and_found is not depository. when_reads is not interacting_with_book. throwing_flowers is throwing. when_reads is interacting_with_book. lagging_strand is tangible_thing. lost_and_found is depository. lost_river is not tangible_thing. reading is interpretation.