On Sun, 3 Mar 2019 16:12:10 -0500, Frank Krygowski
wrote:

But then, the rest of the exhibition seems to glorify the 1950s and
1960s as an era of "good design." Weird.

Such museum exhibits are concept bicycles that were actually built.
Most never make it off the drawing board (or computah screen).
https://www.google.com/search?q=concept+bicycles&tbm=isch
Among the few that can actually be built, even fewer are actually
rideable by humans. So, why do designers continue to product
impractical artistic bicycle creations? Because, like concept
automobiles, nobody is going to manufacture the entire concept bicycle
in its original form. However, they will borrow or steal parts,
pieces, and ideas that might be useful.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558