I learned a new concept
Graceful degradation is the ability of a computer, machine, electronic system or network to maintain limited functionality even when a large portion of it has been destroyed or rendered inoperative. The purpose of graceful degradation is to prevent catastrophic failure. (Tech Target, first result on the search engine)
[ID: tweet by Chris Palmieri @/cpalmieri from 30 September 2017 / "This is how you design with graceful degradation: Muji's flashlight works whether you have one or four batteries, double or triple A." / attached is an illustration of a cross-section of a flashlight battery compartment, where slots in a cross shape accommodate different size batteries. consecutive images show the light dimming as fewer batteries are installed. /end ID]
