Change resistance or what exactly was a floppy disc?

In the chronicles of absurd parenting, my young daughter recently asked “dad, why do I click on that funny square thingy when I want to save my work on the computer?” I can only recommend: don’t discuss the details of data storage evolution with a nine year old—you have a vanishingly small chance of success. But it does make you ask: why are we still clicking on an icon image of a technology you probably can’t even buy anymore in our computer programs?