Should the monogamian family in the distant future fail to answer the requirements of society ... it is impossible to predict the nature of its successor.
Once this happened, everything that George Washington did became a precedent (or something that is used as an example for how people should behave in the future).
Sometimes the vision passes, and there an end; sometimes, however, it has successors, the memory working quite independently of my will, and no link appearing between one scene and the next.
The size of a microwave oven, it led to larger and more capable successors, Spirit and Opportunity in 2003, Curiosity in 2012, and now Perseverance. Lori Glaze is director of NASA's Planetary Science Division.