One of my favorite things about Bicycle design is how once a good design comes along it is remarkably hard to dislodge. Quick release wheels, pneumatic tires, dual pivot swing arm derailleur. A lot of these designs are over a century old now but are still in use more or less unchanged. Everyone’s always creaming their pants about “innovation” but I always find a durable, useful, and repairable design that stands the test of time to be much more impressive.