The saying is "if it ain't broke don't fix it"
Take the Bic original as a prime example. This global stationery brand introduced the BIC Cristal ballpoint pen in 1950
The first mass-produced, disposable pen. What's remarkable? It's hardly changed since it's launch all those years ago
The only changes since 1950 are:
The barrel was reshaped to a haxagonal design for better grip, and a small vent was added to the barrel to prevent vacuum buid up. That's it