To some degree, that can be seen in aspects of automobile styling. One set of extremes is: (1) very squared-off, angular designs such as could be found on late-1920s cars, and (2) highly-rounded designs such as those seen in America around 1936 or 1937.
Today's post features senior-level models of the Chrysler brand such as the New Yorker over the four-decade period 1965-2005. The designs are not as extreme as those just noted, yet nevertheless document the brand's design swings. To some degree these shifts were simply a need perceived by senior styling and marketing executives that it was Time For A Change. However, in the 1990s aerodynamic efficiency requirements were likely an additional factor.
Images below are of cars for sale or factory-sourced unless otherwise noted.
1929 Chrysler 65
First, an example of 1920s square styling.
1937 Chrysler Royal
And the 1930s rounded style.
1965 Chrysler New Yorker - Mecum auction photo
Chryslers were redesigned for 1965 in an angular form.
1965 Chrysler New Yorker
This is especially evident in his side view of the same car.
1965 Chrysler New Yorker
The general feeling, enhanced by the chrome strip atop the fender, is Elwood Engel's carryover theme from his classic 1961 Lincoln Continental design.
1969 Chrysler New Yorker Newport Coupe
Then the pendulum swung towards roundedness in the form of Chrysler Corporation's "fuselage" styling.
1969 Chrysler New Yorker Newport Coupe
Retained was the large front and rear overhang.
1969 Chrysler New Yorker Newport Coupe
The fuselage look was due to curved sides and strong passenger compartment greenhouse tumblehome.
1974 Chrysler Newport 4-door hardtop - Mecum
The next redesign moved away from a rounded look.
1979 Chrysler New Yorker
And the one after that was quite angular.
1983 Chrysler Fifth Avenue
Extreme angularity is seen on the brand's K-car derived line.
1993 Chrysler Concorde
Then the pendulum moved back towards curves in the form of the "cabover" format.
1994 Chrysler New Yorker
A variation was the Jaguar-style tucked-down shaping the the aft end of the passenger greenhouse.
1998 Chrysler Concorde
Redesigned Concordes for 1998 and derivatives were quite rounded.
2005 Chrysler 300C
Then an abrupt return to angularity with the new 300C design that remains in production in facelifted form.
2005 Chrysler 300C
Rear quarter view. The German license plate is due to Chrysler being owned by Daimler-Benz at the time.
2005 Chrysler 300C
Side view. Much less overhang than in the late '60s and early 1970s.