Economists have a name for things that are in daily use despite having been designed multiple decades ago: persistent technology. Biplanes fit the definition, although pilots don't call them that; they call them fun, an even mix of nostalgia and unique performance characteristics. That more than anything explains why biplanes have been in and out of production since the 1930s and the latest one to go into production is the Great Lakes 2T-1A-2, a modern revision of the classic biplane made famous by barnstormer Tex Rankin.
This is a companion discussion topic for the original entry at https://www.avweb.com/ownership/great-lakes-biplane-docile-sporty-and-fun