There have been a few futuristic type of movies put out that display humans as close to being robots without being robots. Everyone wears the same thing, lives in exactly the same type of house or apartment as everyone else does and are pretty much wiped of any characteristics that would normally define a person as being an individual.
Gone are the architectural designs that separated one era from another such as the Gothic era, Greek and Victorian eras. Everything has straight lines with no thought of employing the artful talents of a master artificer’s imagination. All those buildings are gone.
In the movies, food is either in a pill form or some pasty goop that everyone eats but merely as sustenance and nothing more.
And, so far as nature goes, people go from home to school or work and then go back home.
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I don’t know if the above is what is meant by the “flattened person” but when I look at the homes that are being built, the buildings that house businesses and the large push for a hive type of humanity in the west, the lack of displayed natural art and real craftsmanship etc….I’d say yeah, we’re not just flattening, we’re flat lining.